): number;
+
+ export = calculate;
+}
\ No newline at end of file
diff --git a/backend/node_modules/cluster-key-slot/lib/index.js b/backend/node_modules/cluster-key-slot/lib/index.js
new file mode 100644
index 0000000..7928c77
--- /dev/null
+++ b/backend/node_modules/cluster-key-slot/lib/index.js
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2001-2010 Georges Menie (www.menie.org)
+ * Copyright 2010 Salvatore Sanfilippo (adapted to Redis coding style)
+ * Copyright 2015 Zihua Li (http://zihua.li) (ported to JavaScript)
+ * Copyright 2016 Mike Diarmid (http://github.com/salakar) (re-write for performance, ~700% perf inc)
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the University of California, Berkeley nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* CRC16 implementation according to CCITT standards.
+ *
+ * Note by @antirez: this is actually the XMODEM CRC 16 algorithm, using the
+ * following parameters:
+ *
+ * Name : "XMODEM", also known as "ZMODEM", "CRC-16/ACORN"
+ * Width : 16 bit
+ * Poly : 1021 (That is actually x^16 + x^12 + x^5 + 1)
+ * Initialization : 0000
+ * Reflect Input byte : False
+ * Reflect Output CRC : False
+ * Xor constant to output CRC : 0000
+ * Output for "123456789" : 31C3
+ */
+
+var lookup = [
+ 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
+ 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
+ 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
+ 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
+ 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
+ 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
+ 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
+ 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
+ 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
+ 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
+ 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
+ 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
+ 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
+ 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
+ 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
+ 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
+ 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
+ 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
+ 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
+ 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
+ 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
+ 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+ 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
+ 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
+ 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
+ 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
+ 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
+ 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
+ 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
+ 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
+ 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
+ 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
+];
+
+/**
+ * Convert a string to a UTF8 array - faster than via buffer
+ * @param str
+ * @returns {Array}
+ */
+var toUTF8Array = function toUTF8Array(str) {
+ var char;
+ var i = 0;
+ var p = 0;
+ var utf8 = [];
+ var len = str.length;
+
+ for (; i < len; i++) {
+ char = str.charCodeAt(i);
+ if (char < 128) {
+ utf8[p++] = char;
+ } else if (char < 2048) {
+ utf8[p++] = (char >> 6) | 192;
+ utf8[p++] = (char & 63) | 128;
+ } else if (
+ ((char & 0xFC00) === 0xD800) && (i + 1) < str.length &&
+ ((str.charCodeAt(i + 1) & 0xFC00) === 0xDC00)) {
+ char = 0x10000 + ((char & 0x03FF) << 10) + (str.charCodeAt(++i) & 0x03FF);
+ utf8[p++] = (char >> 18) | 240;
+ utf8[p++] = ((char >> 12) & 63) | 128;
+ utf8[p++] = ((char >> 6) & 63) | 128;
+ utf8[p++] = (char & 63) | 128;
+ } else {
+ utf8[p++] = (char >> 12) | 224;
+ utf8[p++] = ((char >> 6) & 63) | 128;
+ utf8[p++] = (char & 63) | 128;
+ }
+ }
+
+ return utf8;
+};
+
+/**
+ * Convert a string into a redis slot hash.
+ * @param str
+ * @returns {number}
+ */
+var generate = module.exports = function generate(str) {
+ var char;
+ var i = 0;
+ var start = -1;
+ var result = 0;
+ var resultHash = 0;
+ var utf8 = typeof str === 'string' ? toUTF8Array(str) : str;
+ var len = utf8.length;
+
+ while (i < len) {
+ char = utf8[i++];
+ if (start === -1) {
+ if (char === 0x7B) {
+ start = i;
+ }
+ } else if (char !== 0x7D) {
+ resultHash = lookup[(char ^ (resultHash >> 8)) & 0xFF] ^ (resultHash << 8);
+ } else if (i - 1 !== start) {
+ return resultHash & 0x3FFF;
+ }
+
+ result = lookup[(char ^ (result >> 8)) & 0xFF] ^ (result << 8);
+ }
+
+ return result & 0x3FFF;
+};
+
+/**
+ * Convert an array of multiple strings into a redis slot hash.
+ * Returns -1 if one of the keys is not for the same slot as the others
+ * @param keys
+ * @returns {number}
+ */
+module.exports.generateMulti = function generateMulti(keys) {
+ var i = 1;
+ var len = keys.length;
+ var base = generate(keys[0]);
+
+ while (i < len) {
+ if (generate(keys[i++]) !== base) return -1;
+ }
+
+ return base;
+};
diff --git a/backend/node_modules/cluster-key-slot/package.json b/backend/node_modules/cluster-key-slot/package.json
new file mode 100644
index 0000000..f75d3d6
--- /dev/null
+++ b/backend/node_modules/cluster-key-slot/package.json
@@ -0,0 +1,56 @@
+{
+ "name": "cluster-key-slot",
+ "version": "1.1.2",
+ "description": "Generates CRC hashes for strings - for use by node redis clients to determine key slots.",
+ "main": "lib/index.js",
+ "types": "index.d.ts",
+ "scripts": {
+ "benchmark": "node ./benchmark",
+ "posttest": "eslint ./lib && npm run coveralls",
+ "coveralls": "cat ./coverage/lcov.info | coveralls",
+ "test": "node ./node_modules/istanbul/lib/cli.js cover --preserve-comments ./node_modules/mocha/bin/_mocha -- -R spec",
+ "coverage:check": "node ./node_modules/istanbul/lib/cli.js check-coverage --branch 100 --statement 100"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/Salakar/cluster-key-slot.git"
+ },
+ "keywords": [
+ "redis",
+ "hash",
+ "crc",
+ "slot",
+ "calc",
+ "javascript",
+ "node",
+ "node_redis",
+ "ioredis"
+ ],
+ "engines": {
+ "node": ">=0.10.0"
+ },
+ "devDependencies": {
+ "benchmark": "^2.1.0",
+ "codeclimate-test-reporter": "^0.3.1",
+ "coveralls": "^2.11.9",
+ "eslint": "^3.5.0",
+ "eslint-config-airbnb-base": "^7.1.0",
+ "eslint-plugin-import": "^1.8.0",
+ "istanbul": "^0.4.0",
+ "mocha": "^3.0.2"
+ },
+ "author": {
+ "name": "Mike Diarmid",
+ "email": "mike.diarmid@gmail.com",
+ "url": "http://github.com/Salakar/"
+ },
+ "license": "Apache-2.0",
+ "bugs": {
+ "url": "https://github.com/Salakar/cluster-key-slot/issues"
+ },
+ "homepage": "https://github.com/Salakar/cluster-key-slot#readme",
+ "directories": {
+ "test": "test",
+ "lib": "lib"
+ }
+}
diff --git a/backend/node_modules/denque/CHANGELOG.md b/backend/node_modules/denque/CHANGELOG.md
new file mode 100644
index 0000000..391a1f5
--- /dev/null
+++ b/backend/node_modules/denque/CHANGELOG.md
@@ -0,0 +1,29 @@
+## 2.1.0
+
+ - fix: issue where `clear()` is still keeping references to the elements (#47)
+ - refactor: performance optimizations for growth and array copy (#43)
+ - refactor: performance optimizations for toArray and fromArray (#46)
+ - test: add additional benchmarks for queue growth and `toArray` (#45)
+
+## 2.0.1
+
+ - fix(types): incorrect return type on `size()`
+
+## 2.0.0
+
+ - fix!: `push` & `unshift` now accept `undefined` values to match behaviour of `Array` (fixes #25) (#35)
+ - This is only a **BREAKING** change if you are currently expecting `push(undefined)` and `unshift(undefined)` to do
+ nothing - the new behaviour now correctly adds undefined values to the queue.
+ - **Note**: behaviour of `push()` & `unshift()` (no arguments) remains unchanged (nothing gets added to the queue).
+ - **Note**: If you need to differentiate between `undefined` values in the queue and the return value of `pop()` then
+ check the queue `.length` before popping.
+ - fix: incorrect methods in types definition file
+
+## 1.5.1
+
+ - perf: minor performance tweak when growing queue size (#29)
+
+## 1.5.0
+
+ - feat: adds capacity option for circular buffers (#27)
+
diff --git a/backend/node_modules/denque/LICENSE b/backend/node_modules/denque/LICENSE
new file mode 100644
index 0000000..c9cde92
--- /dev/null
+++ b/backend/node_modules/denque/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
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+ meet the following conditions:
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+ (a) You must give any other recipients of the Work or
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+
+ (b) You must cause any modified files to carry prominent notices
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+
+ (c) You must retain, in the Source form of any Derivative Works
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+
+ (d) If the Work includes a "NOTICE" text file as part of its
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+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
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+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
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+
+ Copyright 2018-present Invertase Limited
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/backend/node_modules/denque/README.md b/backend/node_modules/denque/README.md
new file mode 100644
index 0000000..3c645d3
--- /dev/null
+++ b/backend/node_modules/denque/README.md
@@ -0,0 +1,77 @@
+
+
Denque
+
+
+
+ 
+ 
+ 
+ 
+ 
+ 
+
+
+Denque is a well tested, extremely fast and lightweight [double-ended queue](http://en.wikipedia.org/wiki/Double-ended_queue)
+implementation with zero dependencies and includes TypeScript types.
+
+Double-ended queues can also be used as a:
+
+- [Stack](http://en.wikipedia.org/wiki/Stack_\(abstract_data_type\))
+- [Queue](http://en.wikipedia.org/wiki/Queue_\(data_structure\))
+
+This implementation is currently the fastest available, even faster than `double-ended-queue`, see the [benchmarks](https://docs.page/invertase/denque/benchmarks).
+
+Every queue operation is done at a constant `O(1)` - including random access from `.peekAt(index)`.
+
+**Works on all node versions >= v0.10**
+
+## Quick Start
+
+Install the package:
+
+```bash
+npm install denque
+```
+
+Create and consume a queue:
+
+```js
+const Denque = require("denque");
+
+const denque = new Denque([1,2,3,4]);
+denque.shift(); // 1
+denque.pop(); // 4
+```
+
+
+See the [API reference documentation](https://docs.page/invertase/denque/api) for more examples.
+
+---
+
+## Who's using it?
+
+- [Kafka Node.js client](https://www.npmjs.com/package/kafka-node)
+- [MariaDB Node.js client](https://www.npmjs.com/package/mariadb)
+- [MongoDB Node.js client](https://www.npmjs.com/package/mongodb)
+- [MySQL Node.js client](https://www.npmjs.com/package/mysql2)
+- [Redis Node.js clients](https://www.npmjs.com/package/redis)
+
+... and [many more](https://www.npmjs.com/browse/depended/denque).
+
+
+---
+
+## License
+
+- See [LICENSE](/LICENSE)
+
+---
+
+
+
+ 
+
+
+ Built and maintained by Invertase.
+
+
diff --git a/backend/node_modules/denque/index.d.ts b/backend/node_modules/denque/index.d.ts
new file mode 100644
index 0000000..e125dd4
--- /dev/null
+++ b/backend/node_modules/denque/index.d.ts
@@ -0,0 +1,47 @@
+declare class Denque {
+ length: number;
+
+ constructor();
+
+ constructor(array: T[]);
+
+ constructor(array: T[], options: IDenqueOptions);
+
+ push(item: T): number;
+
+ unshift(item: T): number;
+
+ pop(): T | undefined;
+
+ shift(): T | undefined;
+
+ peekBack(): T | undefined;
+
+ peekFront(): T | undefined;
+
+ peekAt(index: number): T | undefined;
+
+ get(index: number): T | undefined;
+
+ remove(index: number, count: number): T[];
+
+ removeOne(index: number): T | undefined;
+
+ splice(index: number, count: number, ...item: T[]): T[] | undefined;
+
+ isEmpty(): boolean;
+
+ clear(): void;
+
+ size(): number;
+
+ toString(): string;
+
+ toArray(): T[];
+}
+
+interface IDenqueOptions {
+ capacity?: number
+}
+
+export = Denque;
diff --git a/backend/node_modules/denque/index.js b/backend/node_modules/denque/index.js
new file mode 100644
index 0000000..6b2e9d8
--- /dev/null
+++ b/backend/node_modules/denque/index.js
@@ -0,0 +1,481 @@
+'use strict';
+
+/**
+ * Custom implementation of a double ended queue.
+ */
+function Denque(array, options) {
+ var options = options || {};
+ this._capacity = options.capacity;
+
+ this._head = 0;
+ this._tail = 0;
+
+ if (Array.isArray(array)) {
+ this._fromArray(array);
+ } else {
+ this._capacityMask = 0x3;
+ this._list = new Array(4);
+ }
+}
+
+/**
+ * --------------
+ * PUBLIC API
+ * -------------
+ */
+
+/**
+ * Returns the item at the specified index from the list.
+ * 0 is the first element, 1 is the second, and so on...
+ * Elements at negative values are that many from the end: -1 is one before the end
+ * (the last element), -2 is two before the end (one before last), etc.
+ * @param index
+ * @returns {*}
+ */
+Denque.prototype.peekAt = function peekAt(index) {
+ var i = index;
+ // expect a number or return undefined
+ if ((i !== (i | 0))) {
+ return void 0;
+ }
+ var len = this.size();
+ if (i >= len || i < -len) return undefined;
+ if (i < 0) i += len;
+ i = (this._head + i) & this._capacityMask;
+ return this._list[i];
+};
+
+/**
+ * Alias for peekAt()
+ * @param i
+ * @returns {*}
+ */
+Denque.prototype.get = function get(i) {
+ return this.peekAt(i);
+};
+
+/**
+ * Returns the first item in the list without removing it.
+ * @returns {*}
+ */
+Denque.prototype.peek = function peek() {
+ if (this._head === this._tail) return undefined;
+ return this._list[this._head];
+};
+
+/**
+ * Alias for peek()
+ * @returns {*}
+ */
+Denque.prototype.peekFront = function peekFront() {
+ return this.peek();
+};
+
+/**
+ * Returns the item that is at the back of the queue without removing it.
+ * Uses peekAt(-1)
+ */
+Denque.prototype.peekBack = function peekBack() {
+ return this.peekAt(-1);
+};
+
+/**
+ * Returns the current length of the queue
+ * @return {Number}
+ */
+Object.defineProperty(Denque.prototype, 'length', {
+ get: function length() {
+ return this.size();
+ }
+});
+
+/**
+ * Return the number of items on the list, or 0 if empty.
+ * @returns {number}
+ */
+Denque.prototype.size = function size() {
+ if (this._head === this._tail) return 0;
+ if (this._head < this._tail) return this._tail - this._head;
+ else return this._capacityMask + 1 - (this._head - this._tail);
+};
+
+/**
+ * Add an item at the beginning of the list.
+ * @param item
+ */
+Denque.prototype.unshift = function unshift(item) {
+ if (arguments.length === 0) return this.size();
+ var len = this._list.length;
+ this._head = (this._head - 1 + len) & this._capacityMask;
+ this._list[this._head] = item;
+ if (this._tail === this._head) this._growArray();
+ if (this._capacity && this.size() > this._capacity) this.pop();
+ if (this._head < this._tail) return this._tail - this._head;
+ else return this._capacityMask + 1 - (this._head - this._tail);
+};
+
+/**
+ * Remove and return the first item on the list,
+ * Returns undefined if the list is empty.
+ * @returns {*}
+ */
+Denque.prototype.shift = function shift() {
+ var head = this._head;
+ if (head === this._tail) return undefined;
+ var item = this._list[head];
+ this._list[head] = undefined;
+ this._head = (head + 1) & this._capacityMask;
+ if (head < 2 && this._tail > 10000 && this._tail <= this._list.length >>> 2) this._shrinkArray();
+ return item;
+};
+
+/**
+ * Add an item to the bottom of the list.
+ * @param item
+ */
+Denque.prototype.push = function push(item) {
+ if (arguments.length === 0) return this.size();
+ var tail = this._tail;
+ this._list[tail] = item;
+ this._tail = (tail + 1) & this._capacityMask;
+ if (this._tail === this._head) {
+ this._growArray();
+ }
+ if (this._capacity && this.size() > this._capacity) {
+ this.shift();
+ }
+ if (this._head < this._tail) return this._tail - this._head;
+ else return this._capacityMask + 1 - (this._head - this._tail);
+};
+
+/**
+ * Remove and return the last item on the list.
+ * Returns undefined if the list is empty.
+ * @returns {*}
+ */
+Denque.prototype.pop = function pop() {
+ var tail = this._tail;
+ if (tail === this._head) return undefined;
+ var len = this._list.length;
+ this._tail = (tail - 1 + len) & this._capacityMask;
+ var item = this._list[this._tail];
+ this._list[this._tail] = undefined;
+ if (this._head < 2 && tail > 10000 && tail <= len >>> 2) this._shrinkArray();
+ return item;
+};
+
+/**
+ * Remove and return the item at the specified index from the list.
+ * Returns undefined if the list is empty.
+ * @param index
+ * @returns {*}
+ */
+Denque.prototype.removeOne = function removeOne(index) {
+ var i = index;
+ // expect a number or return undefined
+ if ((i !== (i | 0))) {
+ return void 0;
+ }
+ if (this._head === this._tail) return void 0;
+ var size = this.size();
+ var len = this._list.length;
+ if (i >= size || i < -size) return void 0;
+ if (i < 0) i += size;
+ i = (this._head + i) & this._capacityMask;
+ var item = this._list[i];
+ var k;
+ if (index < size / 2) {
+ for (k = index; k > 0; k--) {
+ this._list[i] = this._list[i = (i - 1 + len) & this._capacityMask];
+ }
+ this._list[i] = void 0;
+ this._head = (this._head + 1 + len) & this._capacityMask;
+ } else {
+ for (k = size - 1 - index; k > 0; k--) {
+ this._list[i] = this._list[i = (i + 1 + len) & this._capacityMask];
+ }
+ this._list[i] = void 0;
+ this._tail = (this._tail - 1 + len) & this._capacityMask;
+ }
+ return item;
+};
+
+/**
+ * Remove number of items from the specified index from the list.
+ * Returns array of removed items.
+ * Returns undefined if the list is empty.
+ * @param index
+ * @param count
+ * @returns {array}
+ */
+Denque.prototype.remove = function remove(index, count) {
+ var i = index;
+ var removed;
+ var del_count = count;
+ // expect a number or return undefined
+ if ((i !== (i | 0))) {
+ return void 0;
+ }
+ if (this._head === this._tail) return void 0;
+ var size = this.size();
+ var len = this._list.length;
+ if (i >= size || i < -size || count < 1) return void 0;
+ if (i < 0) i += size;
+ if (count === 1 || !count) {
+ removed = new Array(1);
+ removed[0] = this.removeOne(i);
+ return removed;
+ }
+ if (i === 0 && i + count >= size) {
+ removed = this.toArray();
+ this.clear();
+ return removed;
+ }
+ if (i + count > size) count = size - i;
+ var k;
+ removed = new Array(count);
+ for (k = 0; k < count; k++) {
+ removed[k] = this._list[(this._head + i + k) & this._capacityMask];
+ }
+ i = (this._head + i) & this._capacityMask;
+ if (index + count === size) {
+ this._tail = (this._tail - count + len) & this._capacityMask;
+ for (k = count; k > 0; k--) {
+ this._list[i = (i + 1 + len) & this._capacityMask] = void 0;
+ }
+ return removed;
+ }
+ if (index === 0) {
+ this._head = (this._head + count + len) & this._capacityMask;
+ for (k = count - 1; k > 0; k--) {
+ this._list[i = (i + 1 + len) & this._capacityMask] = void 0;
+ }
+ return removed;
+ }
+ if (i < size / 2) {
+ this._head = (this._head + index + count + len) & this._capacityMask;
+ for (k = index; k > 0; k--) {
+ this.unshift(this._list[i = (i - 1 + len) & this._capacityMask]);
+ }
+ i = (this._head - 1 + len) & this._capacityMask;
+ while (del_count > 0) {
+ this._list[i = (i - 1 + len) & this._capacityMask] = void 0;
+ del_count--;
+ }
+ if (index < 0) this._tail = i;
+ } else {
+ this._tail = i;
+ i = (i + count + len) & this._capacityMask;
+ for (k = size - (count + index); k > 0; k--) {
+ this.push(this._list[i++]);
+ }
+ i = this._tail;
+ while (del_count > 0) {
+ this._list[i = (i + 1 + len) & this._capacityMask] = void 0;
+ del_count--;
+ }
+ }
+ if (this._head < 2 && this._tail > 10000 && this._tail <= len >>> 2) this._shrinkArray();
+ return removed;
+};
+
+/**
+ * Native splice implementation.
+ * Remove number of items from the specified index from the list and/or add new elements.
+ * Returns array of removed items or empty array if count == 0.
+ * Returns undefined if the list is empty.
+ *
+ * @param index
+ * @param count
+ * @param {...*} [elements]
+ * @returns {array}
+ */
+Denque.prototype.splice = function splice(index, count) {
+ var i = index;
+ // expect a number or return undefined
+ if ((i !== (i | 0))) {
+ return void 0;
+ }
+ var size = this.size();
+ if (i < 0) i += size;
+ if (i > size) return void 0;
+ if (arguments.length > 2) {
+ var k;
+ var temp;
+ var removed;
+ var arg_len = arguments.length;
+ var len = this._list.length;
+ var arguments_index = 2;
+ if (!size || i < size / 2) {
+ temp = new Array(i);
+ for (k = 0; k < i; k++) {
+ temp[k] = this._list[(this._head + k) & this._capacityMask];
+ }
+ if (count === 0) {
+ removed = [];
+ if (i > 0) {
+ this._head = (this._head + i + len) & this._capacityMask;
+ }
+ } else {
+ removed = this.remove(i, count);
+ this._head = (this._head + i + len) & this._capacityMask;
+ }
+ while (arg_len > arguments_index) {
+ this.unshift(arguments[--arg_len]);
+ }
+ for (k = i; k > 0; k--) {
+ this.unshift(temp[k - 1]);
+ }
+ } else {
+ temp = new Array(size - (i + count));
+ var leng = temp.length;
+ for (k = 0; k < leng; k++) {
+ temp[k] = this._list[(this._head + i + count + k) & this._capacityMask];
+ }
+ if (count === 0) {
+ removed = [];
+ if (i != size) {
+ this._tail = (this._head + i + len) & this._capacityMask;
+ }
+ } else {
+ removed = this.remove(i, count);
+ this._tail = (this._tail - leng + len) & this._capacityMask;
+ }
+ while (arguments_index < arg_len) {
+ this.push(arguments[arguments_index++]);
+ }
+ for (k = 0; k < leng; k++) {
+ this.push(temp[k]);
+ }
+ }
+ return removed;
+ } else {
+ return this.remove(i, count);
+ }
+};
+
+/**
+ * Soft clear - does not reset capacity.
+ */
+Denque.prototype.clear = function clear() {
+ this._list = new Array(this._list.length);
+ this._head = 0;
+ this._tail = 0;
+};
+
+/**
+ * Returns true or false whether the list is empty.
+ * @returns {boolean}
+ */
+Denque.prototype.isEmpty = function isEmpty() {
+ return this._head === this._tail;
+};
+
+/**
+ * Returns an array of all queue items.
+ * @returns {Array}
+ */
+Denque.prototype.toArray = function toArray() {
+ return this._copyArray(false);
+};
+
+/**
+ * -------------
+ * INTERNALS
+ * -------------
+ */
+
+/**
+ * Fills the queue with items from an array
+ * For use in the constructor
+ * @param array
+ * @private
+ */
+Denque.prototype._fromArray = function _fromArray(array) {
+ var length = array.length;
+ var capacity = this._nextPowerOf2(length);
+
+ this._list = new Array(capacity);
+ this._capacityMask = capacity - 1;
+ this._tail = length;
+
+ for (var i = 0; i < length; i++) this._list[i] = array[i];
+};
+
+/**
+ *
+ * @param fullCopy
+ * @param size Initialize the array with a specific size. Will default to the current list size
+ * @returns {Array}
+ * @private
+ */
+Denque.prototype._copyArray = function _copyArray(fullCopy, size) {
+ var src = this._list;
+ var capacity = src.length;
+ var length = this.length;
+ size = size | length;
+
+ // No prealloc requested and the buffer is contiguous
+ if (size == length && this._head < this._tail) {
+ // Simply do a fast slice copy
+ return this._list.slice(this._head, this._tail);
+ }
+
+ var dest = new Array(size);
+
+ var k = 0;
+ var i;
+ if (fullCopy || this._head > this._tail) {
+ for (i = this._head; i < capacity; i++) dest[k++] = src[i];
+ for (i = 0; i < this._tail; i++) dest[k++] = src[i];
+ } else {
+ for (i = this._head; i < this._tail; i++) dest[k++] = src[i];
+ }
+
+ return dest;
+}
+
+/**
+ * Grows the internal list array.
+ * @private
+ */
+Denque.prototype._growArray = function _growArray() {
+ if (this._head != 0) {
+ // double array size and copy existing data, head to end, then beginning to tail.
+ var newList = this._copyArray(true, this._list.length << 1);
+
+ this._tail = this._list.length;
+ this._head = 0;
+
+ this._list = newList;
+ } else {
+ this._tail = this._list.length;
+ this._list.length <<= 1;
+ }
+
+ this._capacityMask = (this._capacityMask << 1) | 1;
+};
+
+/**
+ * Shrinks the internal list array.
+ * @private
+ */
+Denque.prototype._shrinkArray = function _shrinkArray() {
+ this._list.length >>>= 1;
+ this._capacityMask >>>= 1;
+};
+
+/**
+ * Find the next power of 2, at least 4
+ * @private
+ * @param {number} num
+ * @returns {number}
+ */
+Denque.prototype._nextPowerOf2 = function _nextPowerOf2(num) {
+ var log2 = Math.log(num) / Math.log(2);
+ var nextPow2 = 1 << (log2 + 1);
+
+ return Math.max(nextPow2, 4);
+}
+
+module.exports = Denque;
diff --git a/backend/node_modules/denque/package.json b/backend/node_modules/denque/package.json
new file mode 100644
index 0000000..a635910
--- /dev/null
+++ b/backend/node_modules/denque/package.json
@@ -0,0 +1,58 @@
+{
+ "name": "denque",
+ "version": "2.1.0",
+ "description": "The fastest javascript implementation of a double-ended queue. Used by the official Redis, MongoDB, MariaDB & MySQL libraries for Node.js and many other libraries. Maintains compatability with deque.",
+ "main": "index.js",
+ "engines": {
+ "node": ">=0.10"
+ },
+ "keywords": [
+ "data-structure",
+ "data-structures",
+ "queue",
+ "double",
+ "end",
+ "ended",
+ "deque",
+ "denque",
+ "double-ended-queue"
+ ],
+ "scripts": {
+ "test": "istanbul cover --report lcov _mocha && npm run typescript",
+ "coveralls": "cat ./coverage/lcov.info | coveralls",
+ "typescript": "tsc --project ./test/type/tsconfig.json",
+ "benchmark_thousand": "node benchmark/thousand",
+ "benchmark_2mil": "node benchmark/two_million",
+ "benchmark_splice": "node benchmark/splice",
+ "benchmark_remove": "node benchmark/remove",
+ "benchmark_removeOne": "node benchmark/removeOne",
+ "benchmark_growth": "node benchmark/growth",
+ "benchmark_toArray": "node benchmark/toArray",
+ "benchmark_fromArray": "node benchmark/fromArray"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/invertase/denque.git"
+ },
+ "license": "Apache-2.0",
+ "author": {
+ "name": "Invertase",
+ "email": "oss@invertase.io",
+ "url": "http://github.com/invertase/"
+ },
+ "contributors": [
+ "Mike Diarmid (Salakar) "
+ ],
+ "bugs": {
+ "url": "https://github.com/invertase/denque/issues"
+ },
+ "homepage": "https://docs.page/invertase/denque",
+ "devDependencies": {
+ "benchmark": "^2.1.4",
+ "codecov": "^3.8.3",
+ "double-ended-queue": "^2.1.0-0",
+ "istanbul": "^0.4.5",
+ "mocha": "^3.5.3",
+ "typescript": "^3.4.1"
+ }
+}
diff --git a/backend/node_modules/ioredis/LICENSE b/backend/node_modules/ioredis/LICENSE
new file mode 100644
index 0000000..1d4bd28
--- /dev/null
+++ b/backend/node_modules/ioredis/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-2022 Zihua Li
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/backend/node_modules/ioredis/README.md b/backend/node_modules/ioredis/README.md
new file mode 100644
index 0000000..2b33d38
--- /dev/null
+++ b/backend/node_modules/ioredis/README.md
@@ -0,0 +1,1498 @@
+[](https://github.com/redis/ioredis)
+
+[](https://github.com/redis/ioredis/actions/workflows/release.yml?query=branch%3Amain)
+[](https://coveralls.io/github/luin/ioredis?branch=main)
+[](http://commitizen.github.io/cz-cli/)
+[](https://github.com/semantic-release/semantic-release)
+
+[](https://discord.gg/redis)
+[](https://www.twitch.tv/redisinc)
+[](https://www.youtube.com/redisinc)
+[](https://twitter.com/redisinc)
+
+A robust, performance-focused and full-featured [Redis](http://redis.io) client for [Node.js](https://nodejs.org).
+
+Supports Redis >= 2.6.12. Completely compatible with Redis 7.x.
+
+ioredis is a stable project and maintenance is done on a best-effort basis for relevant issues (contributions to ioredis will still be evaluated, reviewed, and merged when they benefit the project). For new projects, node-redis is the recommended client library. [node-redis](https://github.com/redis/node-redis) is the open-source (MIT license) Redis JavaScript client library redesigned from the ground up and actively maintained. [node-redis](https://github.com/redis/node-redis) supports new (hash-field expiration) and future commands and the capabilities available in Redis Stack and Redis 8 (search, JSON, time-series, probabilistic data structures).
+
+# Features
+
+ioredis is a robust, full-featured Redis client that is
+used in the world's biggest online commerce company [Alibaba](http://www.alibaba.com/) and many other awesome companies.
+
+0. Full-featured. It supports [Cluster](http://redis.io/topics/cluster-tutorial), [Sentinel](https://redis.io/docs/latest/operate/oss_and_stack/management/sentinel/), [Streams](https://redis.io/topics/streams-intro), [Pipelining](http://redis.io/topics/pipelining), and of course [Lua scripting](http://redis.io/commands/eval), [Redis Functions](https://redis.io/topics/functions-intro), [Pub/Sub](http://redis.io/topics/pubsub) (with the support of binary messages).
+1. High performance 🚀.
+2. Delightful API 😄. It works with Node callbacks and Native promises.
+3. Transformation of command arguments and replies.
+4. Transparent key prefixing.
+5. Abstraction for Lua scripting, allowing you to [define custom commands](https://github.com/redis/ioredis#lua-scripting).
+6. Supports [binary data](https://github.com/redis/ioredis#handle-binary-data).
+7. Supports [TLS](https://github.com/redis/ioredis#tls-options) 🔒.
+8. Supports offline queue and ready checking.
+9. Supports ES6 types, such as `Map` and `Set`.
+10. Supports GEO commands 📍.
+11. Supports Redis ACL.
+12. Sophisticated error handling strategy.
+13. Supports NAT mapping.
+14. Supports autopipelining.
+
+**100% written in TypeScript and official declarations are provided:**
+
+
+
+# Versions
+
+| Version | Branch | Node.js Version | Redis Version |
+| -------------- | ------ | --------------- | --------------- |
+| 5.x.x (latest) | main | >= 12 | 2.6.12 ~ latest |
+| 4.x.x | v4 | >= 8 | 2.6.12 ~ 7 |
+
+Refer to [CHANGELOG.md](CHANGELOG.md) for features and bug fixes introduced in v5.
+
+🚀 [Upgrading from v4 to v5](https://github.com/redis/ioredis/wiki/Upgrading-from-v4-to-v5)
+
+# Links
+
+- [API Documentation](https://redis.github.io/ioredis/) ([Redis](https://redis.github.io/ioredis/classes/Redis.html), [Cluster](https://redis.github.io/ioredis/classes/Cluster.html))
+- [Changelog](CHANGELOG.md)
+
+
+
+# Quick Start
+
+## Install
+
+```shell
+npm install ioredis
+```
+
+In a TypeScript project, you may want to add TypeScript declarations for Node.js:
+
+```shell
+npm install --save-dev @types/node
+```
+
+## Basic Usage
+
+```javascript
+// Import ioredis.
+// You can also use `import { Redis } from "ioredis"`
+// if your project is a TypeScript project,
+// Note that `import Redis from "ioredis"` is still supported,
+// but will be deprecated in the next major version.
+const Redis = require("ioredis");
+
+// Create a Redis instance.
+// By default, it will connect to localhost:6379.
+// We are going to cover how to specify connection options soon.
+const redis = new Redis();
+
+redis.set("mykey", "value"); // Returns a promise which resolves to "OK" when the command succeeds.
+
+// ioredis supports the node.js callback style
+redis.get("mykey", (err, result) => {
+ if (err) {
+ console.error(err);
+ } else {
+ console.log(result); // Prints "value"
+ }
+});
+
+// Or ioredis returns a promise if the last argument isn't a function
+redis.get("mykey").then((result) => {
+ console.log(result); // Prints "value"
+});
+
+redis.zadd("sortedSet", 1, "one", 2, "dos", 4, "quatro", 3, "three");
+redis.zrange("sortedSet", 0, 2, "WITHSCORES").then((elements) => {
+ // ["one", "1", "dos", "2", "three", "3"] as if the command was `redis> ZRANGE sortedSet 0 2 WITHSCORES`
+ console.log(elements);
+});
+
+// All arguments are passed directly to the redis server,
+// so technically ioredis supports all Redis commands.
+// The format is: redis[SOME_REDIS_COMMAND_IN_LOWERCASE](ARGUMENTS_ARE_JOINED_INTO_COMMAND_STRING)
+// so the following statement is equivalent to the CLI: `redis> SET mykey hello EX 10`
+redis.set("mykey", "hello", "EX", 10);
+```
+
+See the `examples/` folder for more examples. For example:
+
+- [TTL](examples/ttl.js)
+- [Strings](examples/string.js)
+- [Hashes](examples/hash.js)
+- [Lists](examples/list.js)
+- [Sets](examples/set.js)
+- [Sorted Sets](examples/zset.js)
+- [Streams](examples/stream.js)
+- [Redis Modules](examples/module.js) e.g. RedisJSON
+
+All Redis commands are supported. See [the documentation](https://redis.github.io/ioredis/classes/Redis.html) for details.
+
+## Connect to Redis
+
+When a new `Redis` instance is created,
+a connection to Redis will be created at the same time.
+You can specify which Redis to connect to by:
+
+```javascript
+new Redis(); // Connect to 127.0.0.1:6379
+new Redis(6380); // 127.0.0.1:6380
+new Redis(6379, "192.168.1.1"); // 192.168.1.1:6379
+new Redis("/tmp/redis.sock");
+new Redis({
+ port: 6379, // Redis port
+ host: "127.0.0.1", // Redis host
+ username: "default", // needs Redis >= 6
+ password: "my-top-secret",
+ db: 0, // Defaults to 0
+});
+```
+
+You can also specify connection options as a [`redis://` URL](http://www.iana.org/assignments/uri-schemes/prov/redis) or [`rediss://` URL](https://www.iana.org/assignments/uri-schemes/prov/rediss) when using [TLS encryption](#tls-options):
+
+```javascript
+// Connect to 127.0.0.1:6380, db 4, using password "authpassword":
+new Redis("redis://:authpassword@127.0.0.1:6380/4");
+
+// Username can also be passed via URI.
+new Redis("redis://username:authpassword@127.0.0.1:6380/4");
+```
+
+See [API Documentation](https://redis.github.io/ioredis/index.html#RedisOptions) for all available options.
+
+## Pub/Sub
+
+Redis provides several commands for developers to implement the [Publish–subscribe pattern](https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern). There are two roles in this pattern: publisher and subscriber. Publishers are not programmed to send their messages to specific subscribers. Rather, published messages are characterized into channels, without knowledge of what (if any) subscribers there may be.
+
+By leveraging Node.js's built-in events module, ioredis makes pub/sub very straightforward to use. Below is a simple example that consists of two files, one is publisher.js that publishes messages to a channel, the other is subscriber.js that listens for messages on specific channels.
+
+```javascript
+// publisher.js
+
+const Redis = require("ioredis");
+const redis = new Redis();
+
+setInterval(() => {
+ const message = { foo: Math.random() };
+ // Publish to my-channel-1 or my-channel-2 randomly.
+ const channel = `my-channel-${1 + Math.round(Math.random())}`;
+
+ // Message can be either a string or a buffer
+ redis.publish(channel, JSON.stringify(message));
+ console.log("Published %s to %s", message, channel);
+}, 1000);
+```
+
+```javascript
+// subscriber.js
+
+const Redis = require("ioredis");
+const redis = new Redis();
+
+redis.subscribe("my-channel-1", "my-channel-2", (err, count) => {
+ if (err) {
+ // Just like other commands, subscribe() can fail for some reasons,
+ // ex network issues.
+ console.error("Failed to subscribe: %s", err.message);
+ } else {
+ // `count` represents the number of channels this client are currently subscribed to.
+ console.log(
+ `Subscribed successfully! This client is currently subscribed to ${count} channels.`
+ );
+ }
+});
+
+redis.on("message", (channel, message) => {
+ console.log(`Received ${message} from ${channel}`);
+});
+
+// There's also an event called 'messageBuffer', which is the same as 'message' except
+// it returns buffers instead of strings.
+// It's useful when the messages are binary data.
+redis.on("messageBuffer", (channel, message) => {
+ // Both `channel` and `message` are buffers.
+ console.log(channel, message);
+});
+```
+
+It's worth noticing that a connection (aka a `Redis` instance) can't play both roles at the same time. More specifically, when a client issues `subscribe()` or `psubscribe()`, it enters the "subscriber" mode. From that point, only commands that modify the subscription set are valid. Namely, they are: `subscribe`, `psubscribe`, `unsubscribe`, `punsubscribe`, `ping`, and `quit`. When the subscription set is empty (via `unsubscribe`/`punsubscribe`), the connection is put back into the regular mode.
+
+If you want to do pub/sub in the same file/process, you should create a separate connection:
+
+```javascript
+const Redis = require("ioredis");
+const sub = new Redis();
+const pub = new Redis();
+
+sub.subscribe(/* ... */); // From now, `sub` enters the subscriber mode.
+sub.on("message" /* ... */);
+
+setInterval(() => {
+ // `pub` can be used to publish messages, or send other regular commands (e.g. `hgetall`)
+ // because it's not in the subscriber mode.
+ pub.publish(/* ... */);
+}, 1000);
+```
+
+`PSUBSCRIBE` is also supported in a similar way when you want to subscribe all channels whose name matches a pattern:
+
+```javascript
+redis.psubscribe("pat?ern", (err, count) => {});
+
+// Event names are "pmessage"/"pmessageBuffer" instead of "message/messageBuffer".
+redis.on("pmessage", (pattern, channel, message) => {});
+redis.on("pmessageBuffer", (pattern, channel, message) => {});
+```
+
+## Streams
+
+Redis v5 introduces a new data type called streams. It doubles as a communication channel for building streaming architectures and as a log-like data structure for persisting data. With ioredis, the usage can be pretty straightforward. Say we have a producer publishes messages to a stream with `redis.xadd("mystream", "*", "randomValue", Math.random())` (You may find the [official documentation of Streams](https://redis.io/topics/streams-intro) as a starter to understand the parameters used), to consume the messages, we'll have a consumer with the following code:
+
+```javascript
+const Redis = require("ioredis");
+const redis = new Redis();
+
+const processMessage = (message) => {
+ console.log("Id: %s. Data: %O", message[0], message[1]);
+};
+
+async function listenForMessage(lastId = "$") {
+ // `results` is an array, each element of which corresponds to a key.
+ // Because we only listen to one key (mystream) here, `results` only contains
+ // a single element. See more: https://redis.io/commands/xread#return-value
+ const results = await redis.xread("BLOCK", 0, "STREAMS", "mystream", lastId);
+ const [key, messages] = results[0]; // `key` equals to "mystream"
+
+ messages.forEach(processMessage);
+
+ // Pass the last id of the results to the next round.
+ await listenForMessage(messages[messages.length - 1][0]);
+}
+
+listenForMessage();
+```
+
+## Expiration
+
+Redis can set a timeout to expire your key, after the timeout has expired the key will be automatically deleted. (You can find the [official Expire documentation](https://redis.io/commands/expire/) to understand better the different parameters you can use), to set your key to expire in 60 seconds, we will have the following code:
+
+```javascript
+redis.set("key", "data", "EX", 60);
+// Equivalent to redis command "SET key data EX 60", because on ioredis set method,
+// all arguments are passed directly to the redis server.
+```
+
+## Handle Binary Data
+
+Binary data support is out of the box. Pass buffers to send binary data:
+
+```javascript
+redis.set("foo", Buffer.from([0x62, 0x75, 0x66]));
+```
+
+Every command that returns a [bulk string](https://redis.io/docs/reference/protocol-spec/#resp-bulk-strings)
+has a variant command with a `Buffer` suffix. The variant command returns a buffer instead of a UTF-8 string:
+
+```javascript
+const result = await redis.getBuffer("foo");
+// result is ``
+```
+
+It's worth noticing that you don't need the `Buffer` suffix variant in order to **send** binary data. That means
+in most case you should just use `redis.set()` instead of `redis.setBuffer()` unless you want to get the old value
+with the `GET` parameter:
+
+```javascript
+const result = await redis.setBuffer("foo", "new value", "GET");
+// result is `` as `GET` indicates returning the old value.
+```
+
+## Pipelining
+
+If you want to send a batch of commands (e.g. > 5), you can use pipelining to queue
+the commands in memory and then send them to Redis all at once. This way the performance improves by 50%~300% (See [benchmark section](#benchmarks)).
+
+`redis.pipeline()` creates a `Pipeline` instance. You can call any Redis
+commands on it just like the `Redis` instance. The commands are queued in memory
+and flushed to Redis by calling the `exec` method:
+
+```javascript
+const pipeline = redis.pipeline();
+pipeline.set("foo", "bar");
+pipeline.del("cc");
+pipeline.exec((err, results) => {
+ // `err` is always null, and `results` is an array of responses
+ // corresponding to the sequence of queued commands.
+ // Each response follows the format `[err, result]`.
+});
+
+// You can even chain the commands:
+redis
+ .pipeline()
+ .set("foo", "bar")
+ .del("cc")
+ .exec((err, results) => {});
+
+// `exec` also returns a Promise:
+const promise = redis.pipeline().set("foo", "bar").get("foo").exec();
+promise.then((result) => {
+ // result === [[null, 'OK'], [null, 'bar']]
+});
+```
+
+Each chained command can also have a callback, which will be invoked when the command
+gets a reply:
+
+```javascript
+redis
+ .pipeline()
+ .set("foo", "bar")
+ .get("foo", (err, result) => {
+ // result === 'bar'
+ })
+ .exec((err, result) => {
+ // result[1][1] === 'bar'
+ });
+```
+
+In addition to adding commands to the `pipeline` queue individually, you can also pass an array of commands and arguments to the constructor:
+
+```javascript
+redis
+ .pipeline([
+ ["set", "foo", "bar"],
+ ["get", "foo"],
+ ])
+ .exec(() => {
+ /* ... */
+ });
+```
+
+`#length` property shows how many commands in the pipeline:
+
+```javascript
+const length = redis.pipeline().set("foo", "bar").get("foo").length;
+// length === 2
+```
+
+## Transaction
+
+Most of the time, the transaction commands `multi` & `exec` are used together with pipeline.
+Therefore, when `multi` is called, a `Pipeline` instance is created automatically by default,
+so you can use `multi` just like `pipeline`:
+
+```javascript
+redis
+ .multi()
+ .set("foo", "bar")
+ .get("foo")
+ .exec((err, results) => {
+ // results === [[null, 'OK'], [null, 'bar']]
+ });
+```
+
+If there's a syntax error in the transaction's command chain (e.g. wrong number of arguments, wrong command name, etc),
+then none of the commands would be executed, and an error is returned:
+
+```javascript
+redis
+ .multi()
+ .set("foo")
+ .set("foo", "new value")
+ .exec((err, results) => {
+ // err:
+ // { [ReplyError: EXECABORT Transaction discarded because of previous errors.]
+ // name: 'ReplyError',
+ // message: 'EXECABORT Transaction discarded because of previous errors.',
+ // command: { name: 'exec', args: [] },
+ // previousErrors:
+ // [ { [ReplyError: ERR wrong number of arguments for 'set' command]
+ // name: 'ReplyError',
+ // message: 'ERR wrong number of arguments for \'set\' command',
+ // command: [Object] } ] }
+ });
+```
+
+In terms of the interface, `multi` differs from `pipeline` in that when specifying a callback
+to each chained command, the queueing state is passed to the callback instead of the result of the command:
+
+```javascript
+redis
+ .multi()
+ .set("foo", "bar", (err, result) => {
+ // result === 'QUEUED'
+ })
+ .exec(/* ... */);
+```
+
+If you want to use transaction without pipeline, pass `{ pipeline: false }` to `multi`,
+and every command will be sent to Redis immediately without waiting for an `exec` invocation:
+
+```javascript
+redis.multi({ pipeline: false });
+redis.set("foo", "bar");
+redis.get("foo");
+redis.exec((err, result) => {
+ // result === [[null, 'OK'], [null, 'bar']]
+});
+```
+
+The constructor of `multi` also accepts a batch of commands:
+
+```javascript
+redis
+ .multi([
+ ["set", "foo", "bar"],
+ ["get", "foo"],
+ ])
+ .exec(() => {
+ /* ... */
+ });
+```
+
+Inline transactions are supported by pipeline, which means you can group a subset of commands
+in the pipeline into a transaction:
+
+```javascript
+redis
+ .pipeline()
+ .get("foo")
+ .multi()
+ .set("foo", "bar")
+ .get("foo")
+ .exec()
+ .get("foo")
+ .exec();
+```
+
+## Lua Scripting
+
+ioredis supports all of the scripting commands such as `EVAL`, `EVALSHA` and `SCRIPT`.
+However, it's tedious to use in real world scenarios since developers have to take
+care of script caching and to detect when to use `EVAL` and when to use `EVALSHA`.
+ioredis exposes a `defineCommand` method to make scripting much easier to use:
+
+```javascript
+const redis = new Redis();
+
+// This will define a command myecho:
+redis.defineCommand("myecho", {
+ numberOfKeys: 2,
+ lua: "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}",
+});
+
+// Now `myecho` can be used just like any other ordinary command,
+// and ioredis will try to use `EVALSHA` internally when possible for better performance.
+redis.myecho("k1", "k2", "a1", "a2", (err, result) => {
+ // result === ['k1', 'k2', 'a1', 'a2']
+});
+
+// `myechoBuffer` is also defined automatically to return buffers instead of strings:
+redis.myechoBuffer("k1", "k2", "a1", "a2", (err, result) => {
+ // result[0] equals to Buffer.from('k1');
+});
+
+// And of course it works with pipeline:
+redis.pipeline().set("foo", "bar").myecho("k1", "k2", "a1", "a2").exec();
+```
+
+### Dynamic Keys
+
+If the number of keys can't be determined when defining a command, you can
+omit the `numberOfKeys` property and pass the number of keys as the first argument
+when you call the command:
+
+```javascript
+redis.defineCommand("echoDynamicKeyNumber", {
+ lua: "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}",
+});
+
+// Now you have to pass the number of keys as the first argument every time
+// you invoke the `echoDynamicKeyNumber` command:
+redis.echoDynamicKeyNumber(2, "k1", "k2", "a1", "a2", (err, result) => {
+ // result === ['k1', 'k2', 'a1', 'a2']
+});
+```
+
+### As Constructor Options
+
+Besides `defineCommand()`, you can also define custom commands with the `scripts` constructor option:
+
+```javascript
+const redis = new Redis({
+ scripts: {
+ myecho: {
+ numberOfKeys: 2,
+ lua: "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}",
+ },
+ },
+});
+```
+
+### TypeScript Usages
+
+You can refer to [the example](examples/typescript/scripts.ts) for how to declare your custom commands.
+
+## Transparent Key Prefixing
+
+This feature allows you to specify a string that will automatically be prepended
+to all the keys in a command, which makes it easier to manage your key
+namespaces.
+
+**Warning** This feature won't apply to commands like [KEYS](http://redis.io/commands/KEYS) and [SCAN](http://redis.io/commands/scan) that take patterns rather than actual keys([#239](https://github.com/redis/ioredis/issues/239)),
+and this feature also won't apply to the replies of commands even if they are key names ([#325](https://github.com/redis/ioredis/issues/325)).
+
+```javascript
+const fooRedis = new Redis({ keyPrefix: "foo:" });
+fooRedis.set("bar", "baz"); // Actually sends SET foo:bar baz
+
+fooRedis.defineCommand("myecho", {
+ numberOfKeys: 2,
+ lua: "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}",
+});
+
+// Works well with pipelining/transaction
+fooRedis
+ .pipeline()
+ // Sends SORT foo:list BY foo:weight_*->fieldname
+ .sort("list", "BY", "weight_*->fieldname")
+ // Supports custom commands
+ // Sends EVALSHA xxx foo:k1 foo:k2 a1 a2
+ .myecho("k1", "k2", "a1", "a2")
+ .exec();
+```
+
+## Transforming Arguments & Replies
+
+Most Redis commands take one or more Strings as arguments,
+and replies are sent back as a single String or an Array of Strings. However, sometimes
+you may want something different. For instance, it would be more convenient if the `HGETALL`
+command returns a hash (e.g. `{ key: val1, key2: v2 }`) rather than an array of key values (e.g. `[key1, val1, key2, val2]`).
+
+ioredis has a flexible system for transforming arguments and replies. There are two types
+of transformers, argument transformer and reply transformer:
+
+```javascript
+const Redis = require("ioredis");
+
+// Here's the built-in argument transformer converting
+// hmset('key', { k1: 'v1', k2: 'v2' })
+// or
+// hmset('key', new Map([['k1', 'v1'], ['k2', 'v2']]))
+// into
+// hmset('key', 'k1', 'v1', 'k2', 'v2')
+Redis.Command.setArgumentTransformer("hmset", (args) => {
+ if (args.length === 2) {
+ if (args[1] instanceof Map) {
+ // utils is a internal module of ioredis
+ return [args[0], ...utils.convertMapToArray(args[1])];
+ }
+ if (typeof args[1] === "object" && args[1] !== null) {
+ return [args[0], ...utils.convertObjectToArray(args[1])];
+ }
+ }
+ return args;
+});
+
+// Here's the built-in reply transformer converting the HGETALL reply
+// ['k1', 'v1', 'k2', 'v2']
+// into
+// { k1: 'v1', 'k2': 'v2' }
+Redis.Command.setReplyTransformer("hgetall", (result) => {
+ if (Array.isArray(result)) {
+ const obj = {};
+ for (let i = 0; i < result.length; i += 2) {
+ obj[result[i]] = result[i + 1];
+ }
+ return obj;
+ }
+ return result;
+});
+```
+
+There are three built-in transformers, two argument transformers for `hmset` & `mset` and
+a reply transformer for `hgetall`. Transformers for `hmset` and `hgetall` were mentioned
+above, and the transformer for `mset` is similar to the one for `hmset`:
+
+```javascript
+redis.mset({ k1: "v1", k2: "v2" });
+redis.get("k1", (err, result) => {
+ // result === 'v1';
+});
+
+redis.mset(
+ new Map([
+ ["k3", "v3"],
+ ["k4", "v4"],
+ ])
+);
+redis.get("k3", (err, result) => {
+ // result === 'v3';
+});
+```
+
+Another useful example of a reply transformer is one that changes `hgetall` to return array of arrays instead of objects which avoids an unwanted conversation of hash keys to strings when dealing with binary hash keys:
+
+```javascript
+Redis.Command.setReplyTransformer("hgetall", (result) => {
+ const arr = [];
+ for (let i = 0; i < result.length; i += 2) {
+ arr.push([result[i], result[i + 1]]);
+ }
+ return arr;
+});
+redis.hset("h1", Buffer.from([0x01]), Buffer.from([0x02]));
+redis.hset("h1", Buffer.from([0x03]), Buffer.from([0x04]));
+redis.hgetallBuffer("h1", (err, result) => {
+ // result === [ [ , ], [ , ] ];
+});
+```
+
+## Monitor
+
+Redis supports the MONITOR command,
+which lets you see all commands received by the Redis server across all client connections,
+including from other client libraries and other computers.
+
+The `monitor` method returns a monitor instance.
+After you send the MONITOR command, no other commands are valid on that connection. ioredis will emit a monitor event for every new monitor message that comes across.
+The callback for the monitor event takes a timestamp from the Redis server and an array of command arguments.
+
+Here is a simple example:
+
+```javascript
+redis.monitor((err, monitor) => {
+ monitor.on("monitor", (time, args, source, database) => {});
+});
+```
+
+Here is another example illustrating an `async` function and `monitor.disconnect()`:
+
+```javascript
+async () => {
+ const monitor = await redis.monitor();
+ monitor.on("monitor", console.log);
+ // Any other tasks
+ monitor.disconnect();
+};
+```
+
+## Streamify Scanning
+
+Redis 2.8 added the `SCAN` command to incrementally iterate through the keys in the database. It's different from `KEYS` in that
+`SCAN` only returns a small number of elements each call, so it can be used in production without the downside
+of blocking the server for a long time. However, it requires recording the cursor on the client side each time
+the `SCAN` command is called in order to iterate through all the keys correctly. Since it's a relatively common use case, ioredis
+provides a streaming interface for the `SCAN` command to make things much easier. A readable stream can be created by calling `scanStream`:
+
+```javascript
+const redis = new Redis();
+// Create a readable stream (object mode)
+const stream = redis.scanStream();
+stream.on("data", (resultKeys) => {
+ // `resultKeys` is an array of strings representing key names.
+ // Note that resultKeys may contain 0 keys, and that it will sometimes
+ // contain duplicates due to SCAN's implementation in Redis.
+ for (let i = 0; i < resultKeys.length; i++) {
+ console.log(resultKeys[i]);
+ }
+});
+stream.on("end", () => {
+ console.log("all keys have been visited");
+});
+```
+
+`scanStream` accepts an option, with which you can specify the `MATCH` pattern, the `TYPE` filter, and the `COUNT` argument:
+
+```javascript
+const stream = redis.scanStream({
+ // only returns keys following the pattern of `user:*`
+ match: "user:*",
+ // only return objects that match a given type,
+ // (requires Redis >= 6.0)
+ type: "zset",
+ // returns approximately 100 elements per call
+ count: 100,
+});
+```
+
+Just like other commands, `scanStream` has a binary version `scanBufferStream`, which returns an array of buffers. It's useful when
+the key names are not utf8 strings.
+
+There are also `hscanStream`, `zscanStream` and `sscanStream` to iterate through elements in a hash, zset and set. The interface of each is
+similar to `scanStream` except the first argument is the key name:
+
+```javascript
+const stream = redis.zscanStream("myhash", {
+ match: "age:??",
+});
+```
+The `hscanStream` also accepts the `noValues` option to specify whether Redis should return only the keys in the hash table without their corresponding values.
+```javascript
+const stream = redis.hscanStream("myhash", {
+ match: "age:??",
+ noValues: true,
+});
+```
+You can learn more from the [Redis documentation](http://redis.io/commands/scan).
+
+**Useful Tips**
+It's pretty common that doing an async task in the `data` handler. We'd like the scanning process to be paused until the async task to be finished. `Stream#pause()` and `Stream#resume()` do the trick. For example if we want to migrate data in Redis to MySQL:
+
+```javascript
+const stream = redis.scanStream();
+stream.on("data", (resultKeys) => {
+ // Pause the stream from scanning more keys until we've migrated the current keys.
+ stream.pause();
+
+ Promise.all(resultKeys.map(migrateKeyToMySQL)).then(() => {
+ // Resume the stream here.
+ stream.resume();
+ });
+});
+
+stream.on("end", () => {
+ console.log("done migration");
+});
+```
+
+## Auto-reconnect
+
+By default, ioredis will try to reconnect when the connection to Redis is lost
+except when the connection is closed manually by `redis.disconnect()` or `redis.quit()`.
+
+It's very flexible to control how long to wait to reconnect after disconnection
+using the `retryStrategy` option:
+
+```javascript
+const redis = new Redis({
+ // This is the default value of `retryStrategy`
+ retryStrategy(times) {
+ const delay = Math.min(times * 50, 2000);
+ return delay;
+ },
+});
+```
+
+`retryStrategy` is a function that will be called when the connection is lost.
+The argument `times` means this is the nth reconnection being made and
+the return value represents how long (in ms) to wait to reconnect. When the
+return value isn't a number, ioredis will stop trying to reconnect, and the connection
+will be lost forever if the user doesn't call `redis.connect()` manually.
+
+When reconnected, the client will auto subscribe to channels that the previous connection subscribed to.
+This behavior can be disabled by setting the `autoResubscribe` option to `false`.
+
+And if the previous connection has some unfulfilled commands (most likely blocking commands such as `brpop` and `blpop`),
+the client will resend them when reconnected. This behavior can be disabled by setting the `autoResendUnfulfilledCommands` option to `false`.
+
+By default, all pending commands will be flushed with an error every 20 retry attempts. That makes sure commands won't wait forever when the connection is down. You can change this behavior by setting `maxRetriesPerRequest`:
+
+```javascript
+const redis = new Redis({
+ maxRetriesPerRequest: 1,
+});
+```
+
+Set maxRetriesPerRequest to `null` to disable this behavior, and every command will wait forever until the connection is alive again (which is the default behavior before ioredis v4).
+
+### Blocking Command Timeout
+
+ioredis can apply a client-side timeout to blocking commands (such as `blpop`, `brpop`, `bzpopmin`, `bzmpop`, `blmpop`, `xread`, `xreadgroup`, etc.). This protects against scenarios where the TCP connection becomes a zombie (e.g., due to a silent network failure like a Docker network disconnect) and Redis never replies.
+
+This feature is **opt-in**. It is **disabled by default** and is only enabled
+when `blockingTimeout` is set to a positive number of milliseconds. If
+`blockingTimeout` is omitted, `0`, or negative (for example `-1`), ioredis
+does not arm any client-side timeouts for blocking commands and their
+behavior matches Redis exactly.
+
+```javascript
+const redis = new Redis({
+ blockingTimeout: 30000, // Enable blocking timeout protection
+});
+```
+
+When enabled:
+- For commands with a finite timeout (e.g., `blpop("key", 5)`), ioredis sets a client-side deadline based on the command's timeout plus a small grace period (`blockingTimeoutGrace`, default 100ms). If no reply arrives before the deadline, the command resolves with `null`—the same value Redis returns when a blocking command times out normally.
+- For commands that block forever (e.g., `timeout = 0` or `BLOCK 0`), the `blockingTimeout` value is used as a safety net.
+
+### Reconnect on Error
+
+Besides auto-reconnect when the connection is closed, ioredis supports reconnecting on certain Redis errors using the `reconnectOnError` option. Here's an example that will reconnect when receiving `READONLY` error:
+
+```javascript
+const redis = new Redis({
+ reconnectOnError(err) {
+ const targetError = "READONLY";
+ if (err.message.includes(targetError)) {
+ // Only reconnect when the error contains "READONLY"
+ return true; // or `return 1;`
+ }
+ },
+});
+```
+
+This feature is useful when using Amazon ElastiCache instances with Auto-failover disabled. On these instances, test your `reconnectOnError` handler by manually promoting the replica node to the primary role using the AWS console. The following writes fail with the error `READONLY`. Using `reconnectOnError`, we can force the connection to reconnect on this error in order to connect to the new master. Furthermore, if the `reconnectOnError` returns `2`, ioredis will resend the failed command after reconnecting.
+
+On ElastiCache instances with Auto-failover enabled, `reconnectOnError` does not execute. Instead of returning a Redis error, AWS closes all connections to the master endpoint until the new primary node is ready. ioredis reconnects via `retryStrategy` instead of `reconnectOnError` after about a minute. On ElastiCache instances with Auto-failover enabled, test failover events with the `Failover primary` option in the AWS console.
+
+## Connection Events
+
+The Redis instance will emit some events about the state of the connection to the Redis server.
+
+| Event | Description |
+| :----------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| connect | emits when a connection is established to the Redis server. |
+| ready | If `enableReadyCheck` is `true`, client will emit `ready` when the server reports that it is ready to receive commands (e.g. finish loading data from disk).
Otherwise, `ready` will be emitted immediately right after the `connect` event. |
+| error | emits when an error occurs while connecting.
However, ioredis emits all `error` events silently (only emits when there's at least one listener) so that your application won't crash if you're not listening to the `error` event.
When `redis.connect()` is explicitly called the error will also be rejected from the returned promise, in addition to emitting it. If `redis.connect()` is not called explicitly and `lazyConnect` is true, ioredis will try to connect automatically on the first command and emit the `error` event silently. |
+| close | emits when an established Redis server connection has closed. |
+| reconnecting | emits after `close` when a reconnection will be made. The argument of the event is the time (in ms) before reconnecting. |
+| end | emits after `close` when no more reconnections will be made, or the connection is failed to establish. |
+| wait | emits when `lazyConnect` is set and will wait for the first command to be called before connecting. |
+
+You can also check out the `Redis#status` property to get the current connection status.
+
+Besides the above connection events, there are several other custom events:
+
+| Event | Description |
+| :----- | :------------------------------------------------------------------ |
+| select | emits when the database changed. The argument is the new db number. |
+
+## Offline Queue
+
+When a command can't be processed by Redis (being sent before the `ready` event), by default, it's added to the offline queue and will be
+executed when it can be processed. You can disable this feature by setting the `enableOfflineQueue`
+option to `false`:
+
+```javascript
+const redis = new Redis({ enableOfflineQueue: false });
+```
+
+## TLS Options
+
+Redis doesn't support TLS natively, however if the redis server you want to connect to is hosted behind a TLS proxy (e.g. [stunnel](https://www.stunnel.org/)) or is offered by a PaaS service that supports TLS connection (e.g. [Redis.com](https://redis.com/)), you can set the `tls` option:
+
+```javascript
+const redis = new Redis({
+ host: "localhost",
+ tls: {
+ // Refer to `tls.connect()` section in
+ // https://nodejs.org/api/tls.html
+ // for all supported options
+ ca: fs.readFileSync("cert.pem"),
+ },
+});
+```
+
+Alternatively, specify the connection through a [`rediss://` URL](https://www.iana.org/assignments/uri-schemes/prov/rediss).
+
+```javascript
+const redis = new Redis("rediss://redis.my-service.com");
+```
+
+If you do not want to use a connection string, you can also specify an empty `tls: {}` object:
+
+```javascript
+const redis = new Redis({
+ host: "redis.my-service.com",
+ tls: {},
+});
+```
+
+### TLS Profiles
+
+> **Warning**
+> TLS profiles described in this section are going to be deprecated in the next major version. Please provide TLS options explicitly.
+
+To make it easier to configure we provide a few pre-configured TLS profiles that can be specified by setting the `tls` option to the profile's name or specifying a `tls.profile` option in case you need to customize some values of the profile.
+
+Profiles:
+
+- `RedisCloudFixed`: Contains the CA for [Redis.com](https://redis.com/) Cloud fixed subscriptions
+- `RedisCloudFlexible`: Contains the CA for [Redis.com](https://redis.com/) Cloud flexible subscriptions
+
+```javascript
+const redis = new Redis({
+ host: "localhost",
+ tls: "RedisCloudFixed",
+});
+
+const redisWithClientCertificate = new Redis({
+ host: "localhost",
+ tls: {
+ profile: "RedisCloudFixed",
+ key: "123",
+ },
+});
+```
+
+
+
+## Sentinel
+
+ioredis supports Sentinel out of the box. It works transparently as all features that work when
+you connect to a single node also work when you connect to a sentinel group. Make sure to run Redis >= 2.8.12 if you want to use this feature. Sentinels have a default port of 26379.
+
+To connect using Sentinel, use:
+
+```javascript
+const redis = new Redis({
+ sentinels: [
+ { host: "localhost", port: 26379 },
+ { host: "localhost", port: 26380 },
+ ],
+ name: "mymaster",
+});
+
+redis.set("foo", "bar");
+```
+
+The arguments passed to the constructor are different from the ones you use to connect to a single node, where:
+
+- `name` identifies a group of Redis instances composed of a master and one or more slaves (`mymaster` in the example);
+- `sentinelPassword` (optional) password for Sentinel instances.
+- `sentinels` are a list of sentinels to connect to. The list does not need to enumerate all your sentinel instances, but a few so that if one is down the client will try the next one.
+- `role` (optional) with a value of `slave` will return a random slave from the Sentinel group.
+- `preferredSlaves` (optional) can be used to prefer a particular slave or set of slaves based on priority. It accepts a function or array.
+- `enableTLSForSentinelMode` (optional) set to true if connecting to sentinel instances that are encrypted
+
+ioredis **guarantees** that the node you connected to is always a master even after a failover. When a failover happens, instead of trying to reconnect to the failed node (which will be demoted to slave when it's available again), ioredis will ask sentinels for the new master node and connect to it. All commands sent during the failover are queued and will be executed when the new connection is established so that none of the commands will be lost.
+
+It's possible to connect to a slave instead of a master by specifying the option `role` with the value of `slave` and ioredis will try to connect to a random slave of the specified master, with the guarantee that the connected node is always a slave. If the current node is promoted to master due to a failover, ioredis will disconnect from it and ask the sentinels for another slave node to connect to.
+
+If you specify the option `preferredSlaves` along with `role: 'slave'` ioredis will attempt to use this value when selecting the slave from the pool of available slaves. The value of `preferredSlaves` should either be a function that accepts an array of available slaves and returns a single result, or an array of slave values priorities by the lowest `prio` value first with a default value of `1`.
+
+```javascript
+// available slaves format
+const availableSlaves = [{ ip: "127.0.0.1", port: "31231", flags: "slave" }];
+
+// preferredSlaves array format
+let preferredSlaves = [
+ { ip: "127.0.0.1", port: "31231", prio: 1 },
+ { ip: "127.0.0.1", port: "31232", prio: 2 },
+];
+
+// preferredSlaves function format
+preferredSlaves = function (availableSlaves) {
+ for (let i = 0; i < availableSlaves.length; i++) {
+ const slave = availableSlaves[i];
+ if (slave.ip === "127.0.0.1") {
+ if (slave.port === "31234") {
+ return slave;
+ }
+ }
+ }
+ // if no preferred slaves are available a random one is used
+ return false;
+};
+
+const redis = new Redis({
+ sentinels: [
+ { host: "127.0.0.1", port: 26379 },
+ { host: "127.0.0.1", port: 26380 },
+ ],
+ name: "mymaster",
+ role: "slave",
+ preferredSlaves: preferredSlaves,
+});
+```
+
+Besides the `retryStrategy` option, there's also a `sentinelRetryStrategy` in Sentinel mode which will be invoked when all the sentinel nodes are unreachable during connecting. If `sentinelRetryStrategy` returns a valid delay time, ioredis will try to reconnect from scratch. The default value of `sentinelRetryStrategy` is:
+
+```javascript
+function (times) {
+ const delay = Math.min(times * 10, 1000);
+ return delay;
+}
+```
+
+## Cluster
+
+Redis Cluster provides a way to run a Redis installation where data is automatically sharded across multiple Redis nodes.
+You can connect to a Redis Cluster like this:
+
+```javascript
+const Redis = require("ioredis");
+
+const cluster = new Redis.Cluster([
+ {
+ port: 6380,
+ host: "127.0.0.1",
+ },
+ {
+ port: 6381,
+ host: "127.0.0.1",
+ },
+]);
+
+cluster.set("foo", "bar");
+cluster.get("foo", (err, res) => {
+ // res === 'bar'
+});
+```
+
+`Cluster` constructor accepts two arguments, where:
+
+0. The first argument is a list of nodes of the cluster you want to connect to.
+ Just like Sentinel, the list does not need to enumerate all your cluster nodes,
+ but a few so that if one is unreachable the client will try the next one, and the client will discover other nodes automatically when at least one node is connected.
+1. The second argument is the options, where:
+
+ - `clusterRetryStrategy`: When none of the startup nodes are reachable, `clusterRetryStrategy` will be invoked. When a number is returned,
+ ioredis will try to reconnect to the startup nodes from scratch after the specified delay (in ms). Otherwise, an error of "None of startup nodes is available" will be returned.
+ The default value of this option is:
+
+ ```javascript
+ function (times) {
+ const delay = Math.min(100 + times * 2, 2000);
+ return delay;
+ }
+ ```
+
+ It's possible to modify the `startupNodes` property in order to switch to another set of nodes here:
+
+ ```javascript
+ function (times) {
+ this.startupNodes = [{ port: 6790, host: '127.0.0.1' }];
+ return Math.min(100 + times * 2, 2000);
+ }
+ ```
+
+ - `dnsLookup`: Alternative DNS lookup function (`dns.lookup()` is used by default). It may be useful to override this in special cases, such as when AWS ElastiCache used with TLS enabled.
+ - `enableOfflineQueue`: Similar to the `enableOfflineQueue` option of `Redis` class.
+ - `enableReadyCheck`: When enabled, "ready" event will only be emitted when `CLUSTER INFO` command
+ reporting the cluster is ready for handling commands. Otherwise, it will be emitted immediately after "connect" is emitted.
+ - `scaleReads`: Config where to send the read queries. See below for more details.
+ - `maxRedirections`: When a cluster related error (e.g. `MOVED`, `ASK` and `CLUSTERDOWN` etc.) is received, the client will redirect the
+ command to another node. This option limits the max redirections allowed when sending a command. The default value is `16`.
+ - `retryDelayOnFailover`: If the target node is disconnected when sending a command,
+ ioredis will retry after the specified delay. The default value is `100`. You should make sure `retryDelayOnFailover * maxRedirections > cluster-node-timeout`
+ to insure that no command will fail during a failover.
+ - `retryDelayOnClusterDown`: When a cluster is down, all commands will be rejected with the error of `CLUSTERDOWN`. If this option is a number (by default, it is `100`), the client
+ will resend the commands after the specified time (in ms).
+ - `retryDelayOnTryAgain`: If this option is a number (by default, it is `100`), the client
+ will resend the commands rejected with `TRYAGAIN` error after the specified time (in ms).
+ - `retryDelayOnMoved`: By default, this value is `0` (in ms), which means when a `MOVED` error is received, the client will resend
+ the command instantly to the node returned together with the `MOVED` error. However, sometimes it takes time for a cluster to become
+ state stabilized after a failover, so adding a delay before resending can prevent a ping pong effect.
+ - `redisOptions`: Default options passed to the constructor of `Redis` when connecting to a node.
+ - `slotsRefreshTimeout`: Milliseconds before a timeout occurs while refreshing slots from the cluster (default `1000`).
+ - `slotsRefreshInterval`: Milliseconds between every automatic slots refresh (by default, it is disabled).
+
+### Read-Write Splitting
+
+A typical redis cluster contains three or more masters and several slaves for each master. It's possible to scale out redis cluster by sending read queries to slaves and write queries to masters by setting the `scaleReads` option.
+
+`scaleReads` is "master" by default, which means ioredis will never send any queries to slaves. There are other three available options:
+
+1. "all": Send write queries to masters and read queries to masters or slaves randomly.
+2. "slave": Send write queries to masters and read queries to slaves.
+3. a custom `function(nodes, command): node`: Will choose the custom function to select to which node to send read queries (write queries keep being sent to master). The first node in `nodes` is always the master serving the relevant slots. If the function returns an array of nodes, a random node of that list will be selected.
+
+For example:
+
+```javascript
+const cluster = new Redis.Cluster(
+ [
+ /* nodes */
+ ],
+ {
+ scaleReads: "slave",
+ }
+);
+cluster.set("foo", "bar"); // This query will be sent to one of the masters.
+cluster.get("foo", (err, res) => {
+ // This query will be sent to one of the slaves.
+});
+```
+
+**NB** In the code snippet above, the `res` may not be equal to "bar" because of the lag of replication between the master and slaves.
+
+### Running Commands to Multiple Nodes
+
+Every command will be sent to exactly one node. For commands containing keys, (e.g. `GET`, `SET` and `HGETALL`), ioredis sends them to the node that serving the keys, and for other commands not containing keys, (e.g. `INFO`, `KEYS` and `FLUSHDB`), ioredis sends them to a random node.
+
+Sometimes you may want to send a command to multiple nodes (masters or slaves) of the cluster, you can get the nodes via `Cluster#nodes()` method.
+
+`Cluster#nodes()` accepts a parameter role, which can be "master", "slave" and "all" (default), and returns an array of `Redis` instance. For example:
+
+```javascript
+// Send `FLUSHDB` command to all slaves:
+const slaves = cluster.nodes("slave");
+Promise.all(slaves.map((node) => node.flushdb()));
+
+// Get keys of all the masters:
+const masters = cluster.nodes("master");
+Promise.all(
+ masters
+ .map((node) => node.keys())
+ .then((keys) => {
+ // keys: [['key1', 'key2'], ['key3', 'key4']]
+ })
+);
+```
+
+### NAT Mapping
+
+Sometimes the cluster is hosted within a internal network that can only be accessed via a NAT (Network Address Translation) instance. See [Accessing ElastiCache from outside AWS](https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/accessing-elasticache.html) as an example.
+
+You can specify nat mapping rules via `natMap` option:
+
+```javascript
+const cluster = new Redis.Cluster(
+ [
+ {
+ host: "203.0.113.73",
+ port: 30001,
+ },
+ ],
+ {
+ natMap: {
+ "10.0.1.230:30001": { host: "203.0.113.73", port: 30001 },
+ "10.0.1.231:30001": { host: "203.0.113.73", port: 30002 },
+ "10.0.1.232:30001": { host: "203.0.113.73", port: 30003 },
+ },
+ }
+);
+```
+
+Or you can specify this parameter through function:
+```javascript
+const cluster = new Redis.Cluster(
+ [
+ {
+ host: "203.0.113.73",
+ port: 30001,
+ },
+ ],
+ {
+ natMap: (key) => {
+ if(key.includes('30001')) {
+ return { host: "203.0.113.73", port: 30001 };
+ }
+
+ return null;
+ },
+ }
+);
+```
+
+This option is also useful when the cluster is running inside a Docker container.
+Also it works for Clusters in cloud infrastructure where cluster nodes connected through dedicated subnet.
+
+Specifying through may be useful if you don't know concrete internal host and know only node port.
+
+### Transaction and Pipeline in Cluster Mode
+
+Almost all features that are supported by `Redis` are also supported by `Redis.Cluster`, e.g. custom commands, transaction and pipeline.
+However there are some differences when using transaction and pipeline in Cluster mode:
+
+0. All keys in a pipeline should belong to slots served by the same node, since ioredis sends all commands in a pipeline to the same node.
+1. You can't use `multi` without pipeline (aka `cluster.multi({ pipeline: false })`). This is because when you call `cluster.multi({ pipeline: false })`, ioredis doesn't know which node the `multi` command should be sent to.
+
+When any commands in a pipeline receives a `MOVED` or `ASK` error, ioredis will resend the whole pipeline to the specified node automatically if all of the following conditions are satisfied:
+
+0. All errors received in the pipeline are the same. For example, we won't resend the pipeline if we got two `MOVED` errors pointing to different nodes.
+1. All commands executed successfully are readonly commands. This makes sure that resending the pipeline won't have side effects.
+
+### Pub/Sub
+
+Pub/Sub in cluster mode works exactly as the same as in standalone mode. Internally, when a node of the cluster receives a message, it will broadcast the message to the other nodes. ioredis makes sure that each message will only be received once by strictly subscribing one node at the same time.
+
+```javascript
+const nodes = [
+ /* nodes */
+];
+const pub = new Redis.Cluster(nodes);
+const sub = new Redis.Cluster(nodes);
+sub.on("message", (channel, message) => {
+ console.log(channel, message);
+});
+
+sub.subscribe("news", () => {
+ pub.publish("news", "highlights");
+});
+```
+
+### Sharded Pub/Sub
+
+For sharded Pub/Sub, use the `spublish` and `ssubscribe` commands instead of the traditional `publish` and `subscribe`. With the old commands, the Redis cluster handles message propagation behind the scenes, allowing you to publish or subscribe to any node without considering sharding. However, this approach has scalability limitations that are addressed with sharded Pub/Sub. Here’s what you need to know:
+
+1. Instead of a single subscriber connection, there is now one subscriber connection per shard. Because of the potential overhead, you can enable or disable the use of the cluster subscriber group with the `shardedSubscribers` option. By default, this option is set to `false`, meaning sharded subscriptions are disabled. You should enable this option when establishing your cluster connection before using `ssubscribe`.
+2. All channel names that you pass to a single `ssubscribe` need to map to the same hash slot. You can call `ssubscribe` multiple times on the same cluster client instance to subscribe to channels across slots. The cluster's subscriber group takes care of forwarding the `ssubscribe` command to the shard that is responsible for the channels.
+
+The following basic example shows you how to use sharded Pub/Sub:
+
+```javascript
+const cluster: Cluster = new Cluster([{host: host, port: port}], {shardedSubscribers: true});
+
+//Register the callback
+cluster.on("smessage", (channel, message) => {
+ console.log(message);
+});
+
+
+//Subscribe to the channels on the same slot
+cluster.ssubscribe("channel{my}:1", "channel{my}:2").then( ( count: number ) => {
+ console.log(count);
+}).catch( (err) => {
+ console.log(err);
+});
+
+//Publish a message
+cluster.spublish("channel{my}:1", "This is a test message to my first channel.").then((value: number) => {
+ console.log("Published a message to channel{my}:1");
+});
+```
+
+
+### Events
+
+| Event | Description |
+| :----------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| connect | emits when a connection is established to the Redis server. |
+| ready | emits when `CLUSTER INFO` reporting the cluster is able to receive commands (if `enableReadyCheck` is `true`) or immediately after `connect` event (if `enableReadyCheck` is false). |
+| error | emits when an error occurs while connecting with a property of `lastNodeError` representing the last node error received. This event is emitted silently (only emitting if there's at least one listener). |
+| close | emits when an established Redis server connection has closed. |
+| reconnecting | emits after `close` when a reconnection will be made. The argument of the event is the time (in ms) before reconnecting. |
+| end | emits after `close` when no more reconnections will be made. |
+| +node | emits when a new node is connected. |
+| -node | emits when a node is disconnected. |
+| node error | emits when an error occurs when connecting to a node. The second argument indicates the address of the node. |
+
+### Password
+
+Setting the `password` option to access password-protected clusters:
+
+```javascript
+const Redis = require("ioredis");
+const cluster = new Redis.Cluster(nodes, {
+ redisOptions: {
+ password: "your-cluster-password",
+ },
+});
+```
+
+If some of nodes in the cluster using a different password, you should specify them in the first parameter:
+
+```javascript
+const Redis = require("ioredis");
+const cluster = new Redis.Cluster(
+ [
+ // Use password "password-for-30001" for 30001
+ { port: 30001, password: "password-for-30001" },
+ // Don't use password when accessing 30002
+ { port: 30002, password: null },
+ // Other nodes will use "fallback-password"
+ ],
+ {
+ redisOptions: {
+ password: "fallback-password",
+ },
+ }
+);
+```
+
+### Special Note: Aws Elasticache Clusters with TLS
+
+AWS ElastiCache for Redis (Clustered Mode) supports TLS encryption. If you use
+this, you may encounter errors with invalid certificates. To resolve this
+issue, construct the `Cluster` with the `dnsLookup` option as follows:
+
+```javascript
+const cluster = new Redis.Cluster(
+ [
+ {
+ host: "clustercfg.myCluster.abcdefg.xyz.cache.amazonaws.com",
+ port: 6379,
+ },
+ ],
+ {
+ dnsLookup: (address, callback) => callback(null, address),
+ redisOptions: {
+ tls: {},
+ },
+ }
+);
+```
+
+
+
+## Autopipelining
+
+In standard mode, when you issue multiple commands, ioredis sends them to the server one by one. As described in Redis pipeline documentation, this is a suboptimal use of the network link, especially when such link is not very performant.
+
+The TCP and network overhead negatively affects performance. Commands are stuck in the send queue until the previous ones are correctly delivered to the server. This is a problem known as Head-Of-Line blocking (HOL).
+
+ioredis supports a feature called “auto pipelining”. It can be enabled by setting the option `enableAutoPipelining` to `true`. No other code change is necessary.
+
+In auto pipelining mode, all commands issued during an event loop are enqueued in a pipeline automatically managed by ioredis. At the end of the iteration, the pipeline is executed and thus all commands are sent to the server at the same time.
+
+This feature can dramatically improve throughput and avoids HOL blocking. In our benchmarks, the improvement was between 35% and 50%.
+
+While an automatic pipeline is executing, all new commands will be enqueued in a new pipeline which will be executed as soon as the previous finishes.
+
+When using Redis Cluster, one pipeline per node is created. Commands are assigned to pipelines according to which node serves the slot.
+
+A pipeline will thus contain commands using different slots but that ultimately are assigned to the same node.
+
+Note that the same slot limitation within a single command still holds, as it is a Redis limitation.
+
+### Example of Automatic Pipeline Enqueuing
+
+This sample code uses ioredis with automatic pipeline enabled.
+
+```javascript
+const Redis = require("./built");
+const http = require("http");
+
+const db = new Redis({ enableAutoPipelining: true });
+
+const server = http.createServer((request, response) => {
+ const key = new URL(request.url, "https://localhost:3000/").searchParams.get(
+ "key"
+ );
+
+ db.get(key, (err, value) => {
+ response.writeHead(200, { "Content-Type": "text/plain" });
+ response.end(value);
+ });
+});
+
+server.listen(3000);
+```
+
+When Node receives requests, it schedules them to be processed in one or more iterations of the events loop.
+
+All commands issued by requests processing during one iteration of the loop will be wrapped in a pipeline automatically created by ioredis.
+
+In the example above, the pipeline will have the following contents:
+
+```
+GET key1
+GET key2
+GET key3
+...
+GET keyN
+```
+
+When all events in the current loop have been processed, the pipeline is executed and thus all commands are sent to the server at the same time.
+
+While waiting for pipeline response from Redis, Node will still be able to process requests. All commands issued by request handler will be enqueued in a new automatically created pipeline. This pipeline will not be sent to the server yet.
+
+As soon as a previous automatic pipeline has received all responses from the server, the new pipeline is immediately sent without waiting for the events loop iteration to finish.
+
+This approach increases the utilization of the network link, reduces the TCP overhead and idle times and therefore improves throughput.
+
+### Benchmarks
+
+Here's some of the results of our tests for a single node.
+
+Each iteration of the test runs 1000 random commands on the server.
+
+| | Samples | Result | Tolerance |
+| ------------------------- | ------- | ------------- | --------- |
+| default | 1000 | 174.62 op/sec | ± 0.45 % |
+| enableAutoPipelining=true | 1500 | 233.33 op/sec | ± 0.88 % |
+
+And here's the same test for a cluster of 3 masters and 3 replicas:
+
+| | Samples | Result | Tolerance |
+| ------------------------- | ------- | ------------- | --------- |
+| default | 1000 | 164.05 op/sec | ± 0.42 % |
+| enableAutoPipelining=true | 3000 | 235.31 op/sec | ± 0.94 % |
+
+# Error Handling
+
+All the errors returned by the Redis server are instances of `ReplyError`, which can be accessed via `Redis`:
+
+```javascript
+const Redis = require("ioredis");
+const redis = new Redis();
+// This command causes a reply error since the SET command requires two arguments.
+redis.set("foo", (err) => {
+ err instanceof Redis.ReplyError;
+});
+```
+
+This is the error stack of the `ReplyError`:
+
+```
+ReplyError: ERR wrong number of arguments for 'set' command
+ at ReplyParser._parseResult (/app/node_modules/ioredis/lib/parsers/javascript.js:60:14)
+ at ReplyParser.execute (/app/node_modules/ioredis/lib/parsers/javascript.js:178:20)
+ at Socket. (/app/node_modules/ioredis/lib/redis/event_handler.js:99:22)
+ at Socket.emit (events.js:97:17)
+ at readableAddChunk (_stream_readable.js:143:16)
+ at Socket.Readable.push (_stream_readable.js:106:10)
+ at TCP.onread (net.js:509:20)
+```
+
+By default, the error stack doesn't make any sense because the whole stack happens in the ioredis
+module itself, not in your code. So it's not easy to find out where the error happens in your code.
+ioredis provides an option `showFriendlyErrorStack` to solve the problem. When you enable
+`showFriendlyErrorStack`, ioredis will optimize the error stack for you:
+
+```javascript
+const Redis = require("ioredis");
+const redis = new Redis({ showFriendlyErrorStack: true });
+redis.set("foo");
+```
+
+And the output will be:
+
+```
+ReplyError: ERR wrong number of arguments for 'set' command
+ at Object. (/app/index.js:3:7)
+ at Module._compile (module.js:446:26)
+ at Object.Module._extensions..js (module.js:464:10)
+ at Module.load (module.js:341:32)
+ at Function.Module._load (module.js:296:12)
+ at Function.Module.runMain (module.js:487:10)
+ at startup (node.js:111:16)
+ at node.js:799:3
+```
+
+This time the stack tells you that the error happens on the third line in your code. Pretty sweet!
+However, it would decrease the performance significantly to optimize the error stack. So by
+default, this option is disabled and can only be used for debugging purposes. You **shouldn't** use this feature in a production environment.
+
+# Running tests
+
+Start a Redis server on 127.0.0.1:6379, and then:
+
+```shell
+npm test
+```
+
+`FLUSH ALL` will be invoked after each test, so make sure there's no valuable data in it before running tests.
+
+If your testing environment does not let you spin up a Redis server [ioredis-mock](https://github.com/stipsan/ioredis-mock) is a drop-in replacement you can use in your tests. It aims to behave identically to ioredis connected to a Redis server so that your integration tests is easier to write and of better quality.
+
+# Debug
+
+You can set the `DEBUG` env to `ioredis:*` to print debug info:
+
+```shell
+$ DEBUG=ioredis:* node app.js
+```
+
+# Join in!
+
+I'm happy to receive bug reports, fixes, documentation enhancements, and any other improvements.
+
+And since I'm not a native English speaker, if you find any grammar mistakes in the documentation, please also let me know. :)
+
+# Contributors
+
+This project exists thanks to all the people who contribute:
+
+
+
+# License
+
+MIT
+
+[](https://app.fossa.io/projects/git%2Bgithub.com%2Fluin%2Fioredis?ref=badge_large)
diff --git a/backend/node_modules/ioredis/built/Command.d.ts b/backend/node_modules/ioredis/built/Command.d.ts
new file mode 100644
index 0000000..1121bb8
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Command.d.ts
@@ -0,0 +1,165 @@
+///
+import { Callback, Respondable, CommandParameter } from "./types";
+export declare type ArgumentType = string | Buffer | number | (string | Buffer | number | any[])[];
+interface CommandOptions {
+ /**
+ * Set the encoding of the reply, by default buffer will be returned.
+ */
+ replyEncoding?: BufferEncoding | null;
+ errorStack?: Error;
+ keyPrefix?: string;
+ /**
+ * Force the command to be readOnly so it will also execute on slaves
+ */
+ readOnly?: boolean;
+}
+declare type ArgumentTransformer = (args: any[]) => any[];
+declare type ReplyTransformer = (reply: any) => any;
+export interface CommandNameFlags {
+ VALID_IN_SUBSCRIBER_MODE: [
+ "subscribe",
+ "psubscribe",
+ "unsubscribe",
+ "punsubscribe",
+ "ssubscribe",
+ "sunsubscribe",
+ "ping",
+ "quit"
+ ];
+ VALID_IN_MONITOR_MODE: ["monitor", "auth"];
+ ENTER_SUBSCRIBER_MODE: ["subscribe", "psubscribe", "ssubscribe"];
+ EXIT_SUBSCRIBER_MODE: ["unsubscribe", "punsubscribe", "sunsubscribe"];
+ WILL_DISCONNECT: ["quit"];
+ HANDSHAKE_COMMANDS: ["auth", "select", "client", "readonly", "info"];
+ IGNORE_RECONNECT_ON_ERROR: ["client"];
+ BLOCKING_COMMANDS: [
+ "blpop",
+ "brpop",
+ "brpoplpush",
+ "blmove",
+ "bzpopmin",
+ "bzpopmax",
+ "bzmpop",
+ "blmpop",
+ "xread",
+ "xreadgroup"
+ ];
+ LAST_ARG_TIMEOUT_COMMANDS: [
+ "blpop",
+ "brpop",
+ "brpoplpush",
+ "blmove",
+ "bzpopmin",
+ "bzpopmax"
+ ];
+ FIRST_ARG_TIMEOUT_COMMANDS: ["bzmpop", "blmpop"];
+ BLOCK_OPTION_COMMANDS: ["xread", "xreadgroup"];
+}
+/**
+ * Command instance
+ *
+ * It's rare that you need to create a Command instance yourself.
+ *
+ * ```js
+ * var infoCommand = new Command('info', null, function (err, result) {
+ * console.log('result', result);
+ * });
+ *
+ * redis.sendCommand(infoCommand);
+ *
+ * // When no callback provided, Command instance will have a `promise` property,
+ * // which will resolve/reject with the result of the command.
+ * var getCommand = new Command('get', ['foo']);
+ * getCommand.promise.then(function (result) {
+ * console.log('result', result);
+ * });
+ * ```
+ */
+export default class Command implements Respondable {
+ name: string;
+ static FLAGS: {
+ [key in keyof CommandNameFlags]: CommandNameFlags[key];
+ };
+ private static flagMap?;
+ private static _transformer;
+ /**
+ * Check whether the command has the flag
+ */
+ static checkFlag(flagName: T, commandName: string): commandName is CommandNameFlags[T][number];
+ static setArgumentTransformer(name: string, func: ArgumentTransformer): void;
+ static setReplyTransformer(name: string, func: ReplyTransformer): void;
+ private static getFlagMap;
+ ignore?: boolean;
+ isReadOnly?: boolean;
+ args: CommandParameter[];
+ inTransaction: boolean;
+ pipelineIndex?: number;
+ isResolved: boolean;
+ reject: (err: Error) => void;
+ resolve: (result: any) => void;
+ promise: Promise;
+ private replyEncoding;
+ private errorStack;
+ private bufferMode;
+ private callback;
+ private transformed;
+ private _commandTimeoutTimer?;
+ private _blockingTimeoutTimer?;
+ private _blockingDeadline?;
+ private slot?;
+ private keys?;
+ /**
+ * Creates an instance of Command.
+ * @param name Command name
+ * @param args An array of command arguments
+ * @param options
+ * @param callback The callback that handles the response.
+ * If omit, the response will be handled via Promise
+ */
+ constructor(name: string, args?: Array, options?: CommandOptions, callback?: Callback);
+ getSlot(): number;
+ getKeys(): Array;
+ /**
+ * Convert command to writable buffer or string
+ */
+ toWritable(_socket: object): string | Buffer;
+ stringifyArguments(): void;
+ /**
+ * Convert buffer/buffer[] to string/string[],
+ * and apply reply transformer.
+ */
+ transformReply(result: Buffer | Buffer[]): string | string[] | Buffer | Buffer[];
+ /**
+ * Set the wait time before terminating the attempt to execute a command
+ * and generating an error.
+ */
+ setTimeout(ms: number): void;
+ /**
+ * Set a timeout for blocking commands.
+ * When the timeout expires, the command resolves with null (matching Redis behavior).
+ * This handles the case of undetectable network failures (e.g., docker network disconnect)
+ * where the TCP connection becomes a zombie and no close event fires.
+ */
+ setBlockingTimeout(ms: number): void;
+ /**
+ * Extract the blocking timeout from the command arguments.
+ *
+ * @returns The timeout in seconds, null for indefinite blocking (timeout of 0),
+ * or undefined if this is not a blocking command
+ */
+ extractBlockingTimeout(): number | null | undefined;
+ /**
+ * Clear the command and blocking timers
+ */
+ private _clearTimers;
+ private initPromise;
+ /**
+ * Iterate through the command arguments that are considered keys.
+ */
+ private _iterateKeys;
+ /**
+ * Convert the value from buffer to the target encoding.
+ */
+ private _convertValue;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/Command.js b/backend/node_modules/ioredis/built/Command.js
new file mode 100644
index 0000000..5069820
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Command.js
@@ -0,0 +1,449 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const commands_1 = require("@ioredis/commands");
+const calculateSlot = require("cluster-key-slot");
+const standard_as_callback_1 = require("standard-as-callback");
+const utils_1 = require("./utils");
+const argumentParsers_1 = require("./utils/argumentParsers");
+/**
+ * Command instance
+ *
+ * It's rare that you need to create a Command instance yourself.
+ *
+ * ```js
+ * var infoCommand = new Command('info', null, function (err, result) {
+ * console.log('result', result);
+ * });
+ *
+ * redis.sendCommand(infoCommand);
+ *
+ * // When no callback provided, Command instance will have a `promise` property,
+ * // which will resolve/reject with the result of the command.
+ * var getCommand = new Command('get', ['foo']);
+ * getCommand.promise.then(function (result) {
+ * console.log('result', result);
+ * });
+ * ```
+ */
+class Command {
+ /**
+ * Creates an instance of Command.
+ * @param name Command name
+ * @param args An array of command arguments
+ * @param options
+ * @param callback The callback that handles the response.
+ * If omit, the response will be handled via Promise
+ */
+ constructor(name, args = [], options = {}, callback) {
+ this.name = name;
+ this.inTransaction = false;
+ this.isResolved = false;
+ this.transformed = false;
+ this.replyEncoding = options.replyEncoding;
+ this.errorStack = options.errorStack;
+ this.args = args.flat();
+ this.callback = callback;
+ this.initPromise();
+ if (options.keyPrefix) {
+ // @ts-expect-error
+ const isBufferKeyPrefix = options.keyPrefix instanceof Buffer;
+ // @ts-expect-error
+ let keyPrefixBuffer = isBufferKeyPrefix
+ ? options.keyPrefix
+ : null;
+ this._iterateKeys((key) => {
+ if (key instanceof Buffer) {
+ if (keyPrefixBuffer === null) {
+ keyPrefixBuffer = Buffer.from(options.keyPrefix);
+ }
+ return Buffer.concat([keyPrefixBuffer, key]);
+ }
+ else if (isBufferKeyPrefix) {
+ // @ts-expect-error
+ return Buffer.concat([options.keyPrefix, Buffer.from(String(key))]);
+ }
+ return options.keyPrefix + key;
+ });
+ }
+ if (options.readOnly) {
+ this.isReadOnly = true;
+ }
+ }
+ /**
+ * Check whether the command has the flag
+ */
+ static checkFlag(flagName, commandName) {
+ commandName = commandName.toLowerCase();
+ return !!this.getFlagMap()[flagName][commandName];
+ }
+ static setArgumentTransformer(name, func) {
+ this._transformer.argument[name] = func;
+ }
+ static setReplyTransformer(name, func) {
+ this._transformer.reply[name] = func;
+ }
+ static getFlagMap() {
+ if (!this.flagMap) {
+ this.flagMap = Object.keys(Command.FLAGS).reduce((map, flagName) => {
+ map[flagName] = {};
+ Command.FLAGS[flagName].forEach((commandName) => {
+ map[flagName][commandName] = true;
+ });
+ return map;
+ }, {});
+ }
+ return this.flagMap;
+ }
+ getSlot() {
+ if (typeof this.slot === "undefined") {
+ const key = this.getKeys()[0];
+ this.slot = key == null ? null : calculateSlot(key);
+ }
+ return this.slot;
+ }
+ getKeys() {
+ return this._iterateKeys();
+ }
+ /**
+ * Convert command to writable buffer or string
+ */
+ toWritable(_socket) {
+ let result;
+ const commandStr = "*" +
+ (this.args.length + 1) +
+ "\r\n$" +
+ Buffer.byteLength(this.name) +
+ "\r\n" +
+ this.name +
+ "\r\n";
+ if (this.bufferMode) {
+ const buffers = new MixedBuffers();
+ buffers.push(commandStr);
+ for (let i = 0; i < this.args.length; ++i) {
+ const arg = this.args[i];
+ if (arg instanceof Buffer) {
+ if (arg.length === 0) {
+ buffers.push("$0\r\n\r\n");
+ }
+ else {
+ buffers.push("$" + arg.length + "\r\n");
+ buffers.push(arg);
+ buffers.push("\r\n");
+ }
+ }
+ else {
+ buffers.push("$" +
+ Buffer.byteLength(arg) +
+ "\r\n" +
+ arg +
+ "\r\n");
+ }
+ }
+ result = buffers.toBuffer();
+ }
+ else {
+ result = commandStr;
+ for (let i = 0; i < this.args.length; ++i) {
+ const arg = this.args[i];
+ result +=
+ "$" +
+ Buffer.byteLength(arg) +
+ "\r\n" +
+ arg +
+ "\r\n";
+ }
+ }
+ return result;
+ }
+ stringifyArguments() {
+ for (let i = 0; i < this.args.length; ++i) {
+ const arg = this.args[i];
+ if (typeof arg === "string") {
+ // buffers and strings don't need any transformation
+ }
+ else if (arg instanceof Buffer) {
+ this.bufferMode = true;
+ }
+ else {
+ this.args[i] = (0, utils_1.toArg)(arg);
+ }
+ }
+ }
+ /**
+ * Convert buffer/buffer[] to string/string[],
+ * and apply reply transformer.
+ */
+ transformReply(result) {
+ if (this.replyEncoding) {
+ result = (0, utils_1.convertBufferToString)(result, this.replyEncoding);
+ }
+ const transformer = Command._transformer.reply[this.name];
+ if (transformer) {
+ result = transformer(result);
+ }
+ return result;
+ }
+ /**
+ * Set the wait time before terminating the attempt to execute a command
+ * and generating an error.
+ */
+ setTimeout(ms) {
+ if (!this._commandTimeoutTimer) {
+ this._commandTimeoutTimer = setTimeout(() => {
+ if (!this.isResolved) {
+ this.reject(new Error("Command timed out"));
+ }
+ }, ms);
+ }
+ }
+ /**
+ * Set a timeout for blocking commands.
+ * When the timeout expires, the command resolves with null (matching Redis behavior).
+ * This handles the case of undetectable network failures (e.g., docker network disconnect)
+ * where the TCP connection becomes a zombie and no close event fires.
+ */
+ setBlockingTimeout(ms) {
+ if (ms <= 0) {
+ return;
+ }
+ // Clear existing timer if any (can happen when command moves from offline to command queue)
+ if (this._blockingTimeoutTimer) {
+ clearTimeout(this._blockingTimeoutTimer);
+ this._blockingTimeoutTimer = undefined;
+ }
+ const now = Date.now();
+ // First call: establish absolute deadline
+ if (this._blockingDeadline === undefined) {
+ this._blockingDeadline = now + ms;
+ }
+ // Check if we've already exceeded the deadline
+ const remaining = this._blockingDeadline - now;
+ if (remaining <= 0) {
+ // Resolve with null to indicate timeout (same as Redis behavior)
+ this.resolve(null);
+ return;
+ }
+ this._blockingTimeoutTimer = setTimeout(() => {
+ if (this.isResolved) {
+ this._blockingTimeoutTimer = undefined;
+ return;
+ }
+ this._blockingTimeoutTimer = undefined;
+ // Timeout expired - resolve with null (same as Redis behavior when blocking command times out)
+ this.resolve(null);
+ }, remaining);
+ }
+ /**
+ * Extract the blocking timeout from the command arguments.
+ *
+ * @returns The timeout in seconds, null for indefinite blocking (timeout of 0),
+ * or undefined if this is not a blocking command
+ */
+ extractBlockingTimeout() {
+ const args = this.args;
+ if (!args || args.length === 0) {
+ return undefined;
+ }
+ const name = this.name.toLowerCase();
+ if (Command.checkFlag("LAST_ARG_TIMEOUT_COMMANDS", name)) {
+ return (0, argumentParsers_1.parseSecondsArgument)(args[args.length - 1]);
+ }
+ if (Command.checkFlag("FIRST_ARG_TIMEOUT_COMMANDS", name)) {
+ return (0, argumentParsers_1.parseSecondsArgument)(args[0]);
+ }
+ if (Command.checkFlag("BLOCK_OPTION_COMMANDS", name)) {
+ return (0, argumentParsers_1.parseBlockOption)(args);
+ }
+ return undefined;
+ }
+ /**
+ * Clear the command and blocking timers
+ */
+ _clearTimers() {
+ const existingTimer = this._commandTimeoutTimer;
+ if (existingTimer) {
+ clearTimeout(existingTimer);
+ delete this._commandTimeoutTimer;
+ }
+ const blockingTimer = this._blockingTimeoutTimer;
+ if (blockingTimer) {
+ clearTimeout(blockingTimer);
+ delete this._blockingTimeoutTimer;
+ }
+ }
+ initPromise() {
+ const promise = new Promise((resolve, reject) => {
+ if (!this.transformed) {
+ this.transformed = true;
+ const transformer = Command._transformer.argument[this.name];
+ if (transformer) {
+ this.args = transformer(this.args);
+ }
+ this.stringifyArguments();
+ }
+ this.resolve = this._convertValue(resolve);
+ this.reject = (err) => {
+ this._clearTimers();
+ if (this.errorStack) {
+ reject((0, utils_1.optimizeErrorStack)(err, this.errorStack.stack, __dirname));
+ }
+ else {
+ reject(err);
+ }
+ };
+ });
+ this.promise = (0, standard_as_callback_1.default)(promise, this.callback);
+ }
+ /**
+ * Iterate through the command arguments that are considered keys.
+ */
+ _iterateKeys(transform = (key) => key) {
+ if (typeof this.keys === "undefined") {
+ this.keys = [];
+ if ((0, commands_1.exists)(this.name, { caseInsensitive: true })) {
+ // @ts-expect-error
+ const keyIndexes = (0, commands_1.getKeyIndexes)(this.name, this.args, {
+ nameCaseInsensitive: true,
+ });
+ for (const index of keyIndexes) {
+ this.args[index] = transform(this.args[index]);
+ this.keys.push(this.args[index]);
+ }
+ }
+ }
+ return this.keys;
+ }
+ /**
+ * Convert the value from buffer to the target encoding.
+ */
+ _convertValue(resolve) {
+ return (value) => {
+ try {
+ this._clearTimers();
+ resolve(this.transformReply(value));
+ this.isResolved = true;
+ }
+ catch (err) {
+ this.reject(err);
+ }
+ return this.promise;
+ };
+ }
+}
+exports.default = Command;
+Command.FLAGS = {
+ VALID_IN_SUBSCRIBER_MODE: [
+ "subscribe",
+ "psubscribe",
+ "unsubscribe",
+ "punsubscribe",
+ "ssubscribe",
+ "sunsubscribe",
+ "ping",
+ "quit",
+ ],
+ VALID_IN_MONITOR_MODE: ["monitor", "auth"],
+ ENTER_SUBSCRIBER_MODE: ["subscribe", "psubscribe", "ssubscribe"],
+ EXIT_SUBSCRIBER_MODE: ["unsubscribe", "punsubscribe", "sunsubscribe"],
+ WILL_DISCONNECT: ["quit"],
+ HANDSHAKE_COMMANDS: ["auth", "select", "client", "readonly", "info"],
+ IGNORE_RECONNECT_ON_ERROR: ["client"],
+ BLOCKING_COMMANDS: [
+ "blpop",
+ "brpop",
+ "brpoplpush",
+ "blmove",
+ "bzpopmin",
+ "bzpopmax",
+ "bzmpop",
+ "blmpop",
+ "xread",
+ "xreadgroup",
+ ],
+ LAST_ARG_TIMEOUT_COMMANDS: [
+ "blpop",
+ "brpop",
+ "brpoplpush",
+ "blmove",
+ "bzpopmin",
+ "bzpopmax",
+ ],
+ FIRST_ARG_TIMEOUT_COMMANDS: ["bzmpop", "blmpop"],
+ BLOCK_OPTION_COMMANDS: ["xread", "xreadgroup"],
+};
+Command._transformer = {
+ argument: {},
+ reply: {},
+};
+const msetArgumentTransformer = function (args) {
+ if (args.length === 1) {
+ if (args[0] instanceof Map) {
+ return (0, utils_1.convertMapToArray)(args[0]);
+ }
+ if (typeof args[0] === "object" && args[0] !== null) {
+ return (0, utils_1.convertObjectToArray)(args[0]);
+ }
+ }
+ return args;
+};
+const hsetArgumentTransformer = function (args) {
+ if (args.length === 2) {
+ if (args[1] instanceof Map) {
+ return [args[0]].concat((0, utils_1.convertMapToArray)(args[1]));
+ }
+ if (typeof args[1] === "object" && args[1] !== null) {
+ return [args[0]].concat((0, utils_1.convertObjectToArray)(args[1]));
+ }
+ }
+ return args;
+};
+Command.setArgumentTransformer("mset", msetArgumentTransformer);
+Command.setArgumentTransformer("msetnx", msetArgumentTransformer);
+Command.setArgumentTransformer("hset", hsetArgumentTransformer);
+Command.setArgumentTransformer("hmset", hsetArgumentTransformer);
+Command.setReplyTransformer("hgetall", function (result) {
+ if (Array.isArray(result)) {
+ const obj = {};
+ for (let i = 0; i < result.length; i += 2) {
+ const key = result[i];
+ const value = result[i + 1];
+ if (key in obj) {
+ // can only be truthy if the property is special somehow, like '__proto__' or 'constructor'
+ // https://github.com/luin/ioredis/issues/1267
+ Object.defineProperty(obj, key, {
+ value,
+ configurable: true,
+ enumerable: true,
+ writable: true,
+ });
+ }
+ else {
+ obj[key] = value;
+ }
+ }
+ return obj;
+ }
+ return result;
+});
+class MixedBuffers {
+ constructor() {
+ this.length = 0;
+ this.items = [];
+ }
+ push(x) {
+ this.length += Buffer.byteLength(x);
+ this.items.push(x);
+ }
+ toBuffer() {
+ const result = Buffer.allocUnsafe(this.length);
+ let offset = 0;
+ for (const item of this.items) {
+ const length = Buffer.byteLength(item);
+ Buffer.isBuffer(item)
+ ? item.copy(result, offset)
+ : result.write(item, offset, length);
+ offset += length;
+ }
+ return result;
+ }
+}
diff --git a/backend/node_modules/ioredis/built/DataHandler.d.ts b/backend/node_modules/ioredis/built/DataHandler.d.ts
new file mode 100644
index 0000000..93e97d9
--- /dev/null
+++ b/backend/node_modules/ioredis/built/DataHandler.d.ts
@@ -0,0 +1,37 @@
+///
+import { NetStream, CommandItem } from "./types";
+import Deque = require("denque");
+import { EventEmitter } from "events";
+import SubscriptionSet from "./SubscriptionSet";
+export interface Condition {
+ select: number;
+ auth?: string | [string, string];
+ subscriber: false | SubscriptionSet;
+}
+export declare type FlushQueueOptions = {
+ offlineQueue?: boolean;
+ commandQueue?: boolean;
+};
+export interface DataHandledable extends EventEmitter {
+ stream: NetStream;
+ status: string;
+ condition: Condition | null;
+ commandQueue: Deque;
+ disconnect(reconnect: boolean): void;
+ recoverFromFatalError(commandError: Error, err: Error, options: FlushQueueOptions): void;
+ handleReconnection(err: Error, item: CommandItem): void;
+}
+interface ParserOptions {
+ stringNumbers: boolean;
+}
+export default class DataHandler {
+ private redis;
+ constructor(redis: DataHandledable, parserOptions: ParserOptions);
+ private returnFatalError;
+ private returnError;
+ private returnReply;
+ private handleSubscriberReply;
+ private handleMonitorReply;
+ private shiftCommand;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/DataHandler.js b/backend/node_modules/ioredis/built/DataHandler.js
new file mode 100644
index 0000000..7f95466
--- /dev/null
+++ b/backend/node_modules/ioredis/built/DataHandler.js
@@ -0,0 +1,224 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const Command_1 = require("./Command");
+const utils_1 = require("./utils");
+const RedisParser = require("redis-parser");
+const SubscriptionSet_1 = require("./SubscriptionSet");
+const debug = (0, utils_1.Debug)("dataHandler");
+class DataHandler {
+ constructor(redis, parserOptions) {
+ this.redis = redis;
+ const parser = new RedisParser({
+ stringNumbers: parserOptions.stringNumbers,
+ returnBuffers: true,
+ returnError: (err) => {
+ this.returnError(err);
+ },
+ returnFatalError: (err) => {
+ this.returnFatalError(err);
+ },
+ returnReply: (reply) => {
+ this.returnReply(reply);
+ },
+ });
+ // prependListener ensures the parser receives and processes data before socket timeout checks are performed
+ redis.stream.prependListener("data", (data) => {
+ parser.execute(data);
+ });
+ // prependListener() doesn't enable flowing mode automatically - we need to resume the stream manually
+ redis.stream.resume();
+ }
+ returnFatalError(err) {
+ err.message += ". Please report this.";
+ this.redis.recoverFromFatalError(err, err, { offlineQueue: false });
+ }
+ returnError(err) {
+ const item = this.shiftCommand(err);
+ if (!item) {
+ return;
+ }
+ err.command = {
+ name: item.command.name,
+ args: item.command.args,
+ };
+ if (item.command.name == "ssubscribe" && err.message.includes("MOVED")) {
+ this.redis.emit("moved");
+ return;
+ }
+ this.redis.handleReconnection(err, item);
+ }
+ returnReply(reply) {
+ if (this.handleMonitorReply(reply)) {
+ return;
+ }
+ if (this.handleSubscriberReply(reply)) {
+ return;
+ }
+ const item = this.shiftCommand(reply);
+ if (!item) {
+ return;
+ }
+ if (Command_1.default.checkFlag("ENTER_SUBSCRIBER_MODE", item.command.name)) {
+ this.redis.condition.subscriber = new SubscriptionSet_1.default();
+ this.redis.condition.subscriber.add(item.command.name, reply[1].toString());
+ if (!fillSubCommand(item.command, reply[2])) {
+ this.redis.commandQueue.unshift(item);
+ }
+ }
+ else if (Command_1.default.checkFlag("EXIT_SUBSCRIBER_MODE", item.command.name)) {
+ if (!fillUnsubCommand(item.command, reply[2])) {
+ this.redis.commandQueue.unshift(item);
+ }
+ }
+ else {
+ item.command.resolve(reply);
+ }
+ }
+ handleSubscriberReply(reply) {
+ if (!this.redis.condition.subscriber) {
+ return false;
+ }
+ const replyType = Array.isArray(reply) ? reply[0].toString() : null;
+ debug('receive reply "%s" in subscriber mode', replyType);
+ switch (replyType) {
+ case "message":
+ if (this.redis.listeners("message").length > 0) {
+ // Check if there're listeners to avoid unnecessary `toString()`.
+ this.redis.emit("message", reply[1].toString(), reply[2] ? reply[2].toString() : "");
+ }
+ this.redis.emit("messageBuffer", reply[1], reply[2]);
+ break;
+ case "pmessage": {
+ const pattern = reply[1].toString();
+ if (this.redis.listeners("pmessage").length > 0) {
+ this.redis.emit("pmessage", pattern, reply[2].toString(), reply[3].toString());
+ }
+ this.redis.emit("pmessageBuffer", pattern, reply[2], reply[3]);
+ break;
+ }
+ case "smessage": {
+ if (this.redis.listeners("smessage").length > 0) {
+ this.redis.emit("smessage", reply[1].toString(), reply[2] ? reply[2].toString() : "");
+ }
+ this.redis.emit("smessageBuffer", reply[1], reply[2]);
+ break;
+ }
+ case "ssubscribe":
+ case "subscribe":
+ case "psubscribe": {
+ const channel = reply[1].toString();
+ this.redis.condition.subscriber.add(replyType, channel);
+ const item = this.shiftCommand(reply);
+ if (!item) {
+ return;
+ }
+ if (!fillSubCommand(item.command, reply[2])) {
+ this.redis.commandQueue.unshift(item);
+ }
+ break;
+ }
+ case "sunsubscribe":
+ case "unsubscribe":
+ case "punsubscribe": {
+ const channel = reply[1] ? reply[1].toString() : null;
+ if (channel) {
+ this.redis.condition.subscriber.del(replyType, channel);
+ }
+ const count = reply[2];
+ if (Number(count) === 0) {
+ this.redis.condition.subscriber = false;
+ }
+ const item = this.shiftCommand(reply);
+ if (!item) {
+ return;
+ }
+ if (!fillUnsubCommand(item.command, count)) {
+ this.redis.commandQueue.unshift(item);
+ }
+ break;
+ }
+ default: {
+ const item = this.shiftCommand(reply);
+ if (!item) {
+ return;
+ }
+ item.command.resolve(reply);
+ }
+ }
+ return true;
+ }
+ handleMonitorReply(reply) {
+ if (this.redis.status !== "monitoring") {
+ return false;
+ }
+ const replyStr = reply.toString();
+ if (replyStr === "OK") {
+ // Valid commands in the monitoring mode are AUTH and MONITOR,
+ // both of which always reply with 'OK'.
+ // So if we got an 'OK', we can make certain that
+ // the reply is made to AUTH & MONITOR.
+ return false;
+ }
+ // Since commands sent in the monitoring mode will trigger an exception,
+ // any replies we received in the monitoring mode should consider to be
+ // realtime monitor data instead of result of commands.
+ const len = replyStr.indexOf(" ");
+ const timestamp = replyStr.slice(0, len);
+ const argIndex = replyStr.indexOf('"');
+ const args = replyStr
+ .slice(argIndex + 1, -1)
+ .split('" "')
+ .map((elem) => elem.replace(/\\"/g, '"'));
+ const dbAndSource = replyStr.slice(len + 2, argIndex - 2).split(" ");
+ this.redis.emit("monitor", timestamp, args, dbAndSource[1], dbAndSource[0]);
+ return true;
+ }
+ shiftCommand(reply) {
+ const item = this.redis.commandQueue.shift();
+ if (!item) {
+ const message = "Command queue state error. If you can reproduce this, please report it.";
+ const error = new Error(message +
+ (reply instanceof Error
+ ? ` Last error: ${reply.message}`
+ : ` Last reply: ${reply.toString()}`));
+ this.redis.emit("error", error);
+ return null;
+ }
+ return item;
+ }
+}
+exports.default = DataHandler;
+const remainingRepliesMap = new WeakMap();
+function fillSubCommand(command, count) {
+ let remainingReplies = remainingRepliesMap.has(command)
+ ? remainingRepliesMap.get(command)
+ : command.args.length;
+ remainingReplies -= 1;
+ if (remainingReplies <= 0) {
+ command.resolve(count);
+ remainingRepliesMap.delete(command);
+ return true;
+ }
+ remainingRepliesMap.set(command, remainingReplies);
+ return false;
+}
+function fillUnsubCommand(command, count) {
+ let remainingReplies = remainingRepliesMap.has(command)
+ ? remainingRepliesMap.get(command)
+ : command.args.length;
+ if (remainingReplies === 0) {
+ if (Number(count) === 0) {
+ remainingRepliesMap.delete(command);
+ command.resolve(count);
+ return true;
+ }
+ return false;
+ }
+ remainingReplies -= 1;
+ if (remainingReplies <= 0) {
+ command.resolve(count);
+ return true;
+ }
+ remainingRepliesMap.set(command, remainingReplies);
+ return false;
+}
diff --git a/backend/node_modules/ioredis/built/Pipeline.d.ts b/backend/node_modules/ioredis/built/Pipeline.d.ts
new file mode 100644
index 0000000..8503d72
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Pipeline.d.ts
@@ -0,0 +1,31 @@
+import Redis from "./Redis";
+import Cluster from "./cluster";
+import Command from "./Command";
+import Commander from "./utils/Commander";
+declare class Pipeline extends Commander<{
+ type: "pipeline";
+}> {
+ redis: Redis | Cluster;
+ isCluster: boolean;
+ isPipeline: boolean;
+ leftRedirections: {
+ value?: number;
+ };
+ promise: Promise;
+ resolve: (result: unknown) => void;
+ reject: (error: Error) => void;
+ private replyPending;
+ private _queue;
+ private _result;
+ private _transactions;
+ private _shaToScript;
+ private preferKey;
+ constructor(redis: Redis | Cluster);
+ fillResult(value: unknown[], position: number): void;
+ sendCommand(command: Command): unknown;
+ addBatch(commands: any): this;
+}
+export default Pipeline;
+interface Pipeline {
+ length: number;
+}
diff --git a/backend/node_modules/ioredis/built/Pipeline.js b/backend/node_modules/ioredis/built/Pipeline.js
new file mode 100644
index 0000000..c1c4566
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Pipeline.js
@@ -0,0 +1,342 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const calculateSlot = require("cluster-key-slot");
+const commands_1 = require("@ioredis/commands");
+const standard_as_callback_1 = require("standard-as-callback");
+const util_1 = require("util");
+const Command_1 = require("./Command");
+const utils_1 = require("./utils");
+const Commander_1 = require("./utils/Commander");
+/*
+ This function derives from the cluster-key-slot implementation.
+ Instead of checking that all keys have the same slot, it checks that all slots are served by the same set of nodes.
+ If this is satisfied, it returns the first key's slot.
+*/
+function generateMultiWithNodes(redis, keys) {
+ const slot = calculateSlot(keys[0]);
+ const target = redis._groupsBySlot[slot];
+ for (let i = 1; i < keys.length; i++) {
+ if (redis._groupsBySlot[calculateSlot(keys[i])] !== target) {
+ return -1;
+ }
+ }
+ return slot;
+}
+class Pipeline extends Commander_1.default {
+ constructor(redis) {
+ super();
+ this.redis = redis;
+ this.isPipeline = true;
+ this.replyPending = 0;
+ this._queue = [];
+ this._result = [];
+ this._transactions = 0;
+ this._shaToScript = {};
+ this.isCluster =
+ this.redis.constructor.name === "Cluster" || this.redis.isCluster;
+ this.options = redis.options;
+ Object.keys(redis.scriptsSet).forEach((name) => {
+ const script = redis.scriptsSet[name];
+ this._shaToScript[script.sha] = script;
+ this[name] = redis[name];
+ this[name + "Buffer"] = redis[name + "Buffer"];
+ });
+ redis.addedBuiltinSet.forEach((name) => {
+ this[name] = redis[name];
+ this[name + "Buffer"] = redis[name + "Buffer"];
+ });
+ this.promise = new Promise((resolve, reject) => {
+ this.resolve = resolve;
+ this.reject = reject;
+ });
+ const _this = this;
+ Object.defineProperty(this, "length", {
+ get: function () {
+ return _this._queue.length;
+ },
+ });
+ }
+ fillResult(value, position) {
+ if (this._queue[position].name === "exec" && Array.isArray(value[1])) {
+ const execLength = value[1].length;
+ for (let i = 0; i < execLength; i++) {
+ if (value[1][i] instanceof Error) {
+ continue;
+ }
+ const cmd = this._queue[position - (execLength - i)];
+ try {
+ value[1][i] = cmd.transformReply(value[1][i]);
+ }
+ catch (err) {
+ value[1][i] = err;
+ }
+ }
+ }
+ this._result[position] = value;
+ if (--this.replyPending) {
+ return;
+ }
+ if (this.isCluster) {
+ let retriable = true;
+ let commonError;
+ for (let i = 0; i < this._result.length; ++i) {
+ const error = this._result[i][0];
+ const command = this._queue[i];
+ if (error) {
+ if (command.name === "exec" &&
+ error.message ===
+ "EXECABORT Transaction discarded because of previous errors.") {
+ continue;
+ }
+ if (!commonError) {
+ commonError = {
+ name: error.name,
+ message: error.message,
+ };
+ }
+ else if (commonError.name !== error.name ||
+ commonError.message !== error.message) {
+ retriable = false;
+ break;
+ }
+ }
+ else if (!command.inTransaction) {
+ const isReadOnly = (0, commands_1.exists)(command.name, { caseInsensitive: true }) &&
+ (0, commands_1.hasFlag)(command.name, "readonly", { nameCaseInsensitive: true });
+ if (!isReadOnly) {
+ retriable = false;
+ break;
+ }
+ }
+ }
+ if (commonError && retriable) {
+ const _this = this;
+ const errv = commonError.message.split(" ");
+ const queue = this._queue;
+ let inTransaction = false;
+ this._queue = [];
+ for (let i = 0; i < queue.length; ++i) {
+ if (errv[0] === "ASK" &&
+ !inTransaction &&
+ queue[i].name !== "asking" &&
+ (!queue[i - 1] || queue[i - 1].name !== "asking")) {
+ const asking = new Command_1.default("asking");
+ asking.ignore = true;
+ this.sendCommand(asking);
+ }
+ queue[i].initPromise();
+ this.sendCommand(queue[i]);
+ inTransaction = queue[i].inTransaction;
+ }
+ let matched = true;
+ if (typeof this.leftRedirections === "undefined") {
+ this.leftRedirections = {};
+ }
+ const exec = function () {
+ _this.exec();
+ };
+ const cluster = this.redis;
+ cluster.handleError(commonError, this.leftRedirections, {
+ moved: function (_slot, key) {
+ _this.preferKey = key;
+ if (cluster.slots[errv[1]]) {
+ if (cluster.slots[errv[1]][0] !== key) {
+ cluster.slots[errv[1]] = [key];
+ }
+ }
+ else {
+ cluster.slots[errv[1]] = [key];
+ }
+ cluster._groupsBySlot[errv[1]] =
+ cluster._groupsIds[cluster.slots[errv[1]].join(";")];
+ cluster.refreshSlotsCache();
+ _this.exec();
+ },
+ ask: function (_slot, key) {
+ _this.preferKey = key;
+ _this.exec();
+ },
+ tryagain: exec,
+ clusterDown: exec,
+ connectionClosed: exec,
+ maxRedirections: () => {
+ matched = false;
+ },
+ defaults: () => {
+ matched = false;
+ },
+ });
+ if (matched) {
+ return;
+ }
+ }
+ }
+ let ignoredCount = 0;
+ for (let i = 0; i < this._queue.length - ignoredCount; ++i) {
+ if (this._queue[i + ignoredCount].ignore) {
+ ignoredCount += 1;
+ }
+ this._result[i] = this._result[i + ignoredCount];
+ }
+ this.resolve(this._result.slice(0, this._result.length - ignoredCount));
+ }
+ sendCommand(command) {
+ if (this._transactions > 0) {
+ command.inTransaction = true;
+ }
+ const position = this._queue.length;
+ command.pipelineIndex = position;
+ command.promise
+ .then((result) => {
+ this.fillResult([null, result], position);
+ })
+ .catch((error) => {
+ this.fillResult([error], position);
+ });
+ this._queue.push(command);
+ return this;
+ }
+ addBatch(commands) {
+ let command, commandName, args;
+ for (let i = 0; i < commands.length; ++i) {
+ command = commands[i];
+ commandName = command[0];
+ args = command.slice(1);
+ this[commandName].apply(this, args);
+ }
+ return this;
+ }
+}
+exports.default = Pipeline;
+// @ts-expect-error
+const multi = Pipeline.prototype.multi;
+// @ts-expect-error
+Pipeline.prototype.multi = function () {
+ this._transactions += 1;
+ return multi.apply(this, arguments);
+};
+// @ts-expect-error
+const execBuffer = Pipeline.prototype.execBuffer;
+// @ts-expect-error
+Pipeline.prototype.execBuffer = (0, util_1.deprecate)(function () {
+ if (this._transactions > 0) {
+ this._transactions -= 1;
+ }
+ return execBuffer.apply(this, arguments);
+}, "Pipeline#execBuffer: Use Pipeline#exec instead");
+// NOTE: To avoid an unhandled promise rejection, this will unconditionally always return this.promise,
+// which always has the rejection handled by standard-as-callback
+// adding the provided rejection callback.
+//
+// If a different promise instance were returned, that promise would cause its own unhandled promise rejection
+// errors, even if that promise unconditionally resolved to **the resolved value of** this.promise.
+Pipeline.prototype.exec = function (callback) {
+ // Wait for the cluster to be connected, since we need nodes information before continuing
+ if (this.isCluster && !this.redis.slots.length) {
+ if (this.redis.status === "wait")
+ this.redis.connect().catch(utils_1.noop);
+ if (callback && !this.nodeifiedPromise) {
+ this.nodeifiedPromise = true;
+ (0, standard_as_callback_1.default)(this.promise, callback);
+ }
+ this.redis.delayUntilReady((err) => {
+ if (err) {
+ this.reject(err);
+ return;
+ }
+ this.exec(callback);
+ });
+ return this.promise;
+ }
+ if (this._transactions > 0) {
+ this._transactions -= 1;
+ return execBuffer.apply(this, arguments);
+ }
+ if (!this.nodeifiedPromise) {
+ this.nodeifiedPromise = true;
+ (0, standard_as_callback_1.default)(this.promise, callback);
+ }
+ if (!this._queue.length) {
+ this.resolve([]);
+ }
+ let pipelineSlot;
+ if (this.isCluster) {
+ // List of the first key for each command
+ const sampleKeys = [];
+ for (let i = 0; i < this._queue.length; i++) {
+ const keys = this._queue[i].getKeys();
+ if (keys.length) {
+ sampleKeys.push(keys[0]);
+ }
+ // For each command, check that the keys belong to the same slot
+ if (keys.length && calculateSlot.generateMulti(keys) < 0) {
+ this.reject(new Error("All the keys in a pipeline command should belong to the same slot"));
+ return this.promise;
+ }
+ }
+ if (sampleKeys.length) {
+ pipelineSlot = generateMultiWithNodes(this.redis, sampleKeys);
+ if (pipelineSlot < 0) {
+ this.reject(new Error("All keys in the pipeline should belong to the same slots allocation group"));
+ return this.promise;
+ }
+ }
+ else {
+ // Send the pipeline to a random node
+ pipelineSlot = (Math.random() * 16384) | 0;
+ }
+ }
+ const _this = this;
+ execPipeline();
+ return this.promise;
+ function execPipeline() {
+ let writePending = (_this.replyPending = _this._queue.length);
+ let node;
+ if (_this.isCluster) {
+ node = {
+ slot: pipelineSlot,
+ redis: _this.redis.connectionPool.nodes.all[_this.preferKey],
+ };
+ }
+ let data = "";
+ let buffers;
+ const stream = {
+ isPipeline: true,
+ destination: _this.isCluster ? node : { redis: _this.redis },
+ write(writable) {
+ if (typeof writable !== "string") {
+ if (!buffers) {
+ buffers = [];
+ }
+ if (data) {
+ buffers.push(Buffer.from(data, "utf8"));
+ data = "";
+ }
+ buffers.push(writable);
+ }
+ else {
+ data += writable;
+ }
+ if (!--writePending) {
+ if (buffers) {
+ if (data) {
+ buffers.push(Buffer.from(data, "utf8"));
+ }
+ stream.destination.redis.stream.write(Buffer.concat(buffers));
+ }
+ else {
+ stream.destination.redis.stream.write(data);
+ }
+ // Reset writePending for resending
+ writePending = _this._queue.length;
+ data = "";
+ buffers = undefined;
+ }
+ },
+ };
+ for (let i = 0; i < _this._queue.length; ++i) {
+ _this.redis.sendCommand(_this._queue[i], stream, node);
+ }
+ return _this.promise;
+ }
+};
diff --git a/backend/node_modules/ioredis/built/Redis.d.ts b/backend/node_modules/ioredis/built/Redis.d.ts
new file mode 100644
index 0000000..5cc73b0
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Redis.d.ts
@@ -0,0 +1,232 @@
+///
+import { EventEmitter } from "events";
+import Cluster from "./cluster";
+import Command from "./Command";
+import { DataHandledable, FlushQueueOptions, Condition } from "./DataHandler";
+import { RedisOptions } from "./redis/RedisOptions";
+import ScanStream from "./ScanStream";
+import { Transaction } from "./transaction";
+import { Callback, CommandItem, NetStream, ScanStreamOptions, WriteableStream } from "./types";
+import Commander from "./utils/Commander";
+import Deque = require("denque");
+declare type RedisStatus = "wait" | "reconnecting" | "connecting" | "connect" | "ready" | "close" | "end";
+/**
+ * This is the major component of ioredis.
+ * Use it to connect to a standalone Redis server or Sentinels.
+ *
+ * ```typescript
+ * const redis = new Redis(); // Default port is 6379
+ * async function main() {
+ * redis.set("foo", "bar");
+ * redis.get("foo", (err, result) => {
+ * // `result` should be "bar"
+ * console.log(err, result);
+ * });
+ * // Or use Promise
+ * const result = await redis.get("foo");
+ * }
+ * ```
+ */
+declare class Redis extends Commander implements DataHandledable {
+ static Cluster: typeof Cluster;
+ static Command: typeof Command;
+ /**
+ * Default options
+ */
+ private static defaultOptions;
+ /**
+ * Create a Redis instance.
+ * This is the same as `new Redis()` but is included for compatibility with node-redis.
+ */
+ static createClient(...args: ConstructorParameters): Redis;
+ options: RedisOptions;
+ status: RedisStatus;
+ /**
+ * @ignore
+ */
+ stream: NetStream;
+ /**
+ * @ignore
+ */
+ isCluster: boolean;
+ /**
+ * @ignore
+ */
+ condition: Condition | null;
+ /**
+ * @ignore
+ */
+ commandQueue: Deque;
+ private connector;
+ private reconnectTimeout;
+ private offlineQueue;
+ private connectionEpoch;
+ private retryAttempts;
+ private manuallyClosing;
+ private socketTimeoutTimer;
+ private _autoPipelines;
+ private _runningAutoPipelines;
+ constructor(port: number, host: string, options: RedisOptions);
+ constructor(path: string, options: RedisOptions);
+ constructor(port: number, options: RedisOptions);
+ constructor(port: number, host: string);
+ constructor(options: RedisOptions);
+ constructor(port: number);
+ constructor(path: string);
+ constructor();
+ get autoPipelineQueueSize(): number;
+ /**
+ * Create a connection to Redis.
+ * This method will be invoked automatically when creating a new Redis instance
+ * unless `lazyConnect: true` is passed.
+ *
+ * When calling this method manually, a Promise is returned, which will
+ * be resolved when the connection status is ready. The promise can reject
+ * if the connection fails, times out, or if Redis is already connecting/connected.
+ */
+ connect(callback?: Callback): Promise;
+ /**
+ * Disconnect from Redis.
+ *
+ * This method closes the connection immediately,
+ * and may lose some pending replies that haven't written to client.
+ * If you want to wait for the pending replies, use Redis#quit instead.
+ */
+ disconnect(reconnect?: boolean): void;
+ /**
+ * Disconnect from Redis.
+ *
+ * @deprecated
+ */
+ end(): void;
+ /**
+ * Create a new instance with the same options as the current one.
+ *
+ * @example
+ * ```js
+ * var redis = new Redis(6380);
+ * var anotherRedis = redis.duplicate();
+ * ```
+ */
+ duplicate(override?: Partial): Redis;
+ /**
+ * Mode of the connection.
+ *
+ * One of `"normal"`, `"subscriber"`, or `"monitor"`. When the connection is
+ * not in `"normal"` mode, certain commands are not allowed.
+ */
+ get mode(): "normal" | "subscriber" | "monitor";
+ /**
+ * Listen for all requests received by the server in real time.
+ *
+ * This command will create a new connection to Redis and send a
+ * MONITOR command via the new connection in order to avoid disturbing
+ * the current connection.
+ *
+ * @param callback The callback function. If omit, a promise will be returned.
+ * @example
+ * ```js
+ * var redis = new Redis();
+ * redis.monitor(function (err, monitor) {
+ * // Entering monitoring mode.
+ * monitor.on('monitor', function (time, args, source, database) {
+ * console.log(time + ": " + util.inspect(args));
+ * });
+ * });
+ *
+ * // supports promise as well as other commands
+ * redis.monitor().then(function (monitor) {
+ * monitor.on('monitor', function (time, args, source, database) {
+ * console.log(time + ": " + util.inspect(args));
+ * });
+ * });
+ * ```
+ */
+ monitor(callback?: Callback): Promise;
+ /**
+ * Send a command to Redis
+ *
+ * This method is used internally and in most cases you should not
+ * use it directly. If you need to send a command that is not supported
+ * by the library, you can use the `call` method:
+ *
+ * ```js
+ * const redis = new Redis();
+ *
+ * redis.call('set', 'foo', 'bar');
+ * // or
+ * redis.call(['set', 'foo', 'bar']);
+ * ```
+ *
+ * @ignore
+ */
+ sendCommand(command: Command, stream?: WriteableStream): unknown;
+ private getBlockingTimeoutInMs;
+ private getConfiguredBlockingTimeout;
+ private setSocketTimeout;
+ scanStream(options?: ScanStreamOptions): ScanStream;
+ scanBufferStream(options?: ScanStreamOptions): ScanStream;
+ sscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ sscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ hscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ hscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ zscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ zscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ /**
+ * Emit only when there's at least one listener.
+ *
+ * @ignore
+ */
+ silentEmit(eventName: string, arg?: unknown): boolean;
+ /**
+ * @ignore
+ */
+ recoverFromFatalError(_commandError: Error, err: Error, options: FlushQueueOptions): void;
+ /**
+ * @ignore
+ */
+ handleReconnection(err: Error, item: CommandItem): void;
+ /**
+ * Get description of the connection. Used for debugging.
+ */
+ private _getDescription;
+ private resetCommandQueue;
+ private resetOfflineQueue;
+ private parseOptions;
+ /**
+ * Change instance's status
+ */
+ private setStatus;
+ private createScanStream;
+ /**
+ * Flush offline queue and command queue with error.
+ *
+ * @param error The error object to send to the commands
+ * @param options options
+ */
+ private flushQueue;
+ /**
+ * Check whether Redis has finished loading the persistent data and is able to
+ * process commands.
+ */
+ private _readyCheck;
+}
+interface Redis extends EventEmitter {
+ on(event: "message", cb: (channel: string, message: string) => void): this;
+ once(event: "message", cb: (channel: string, message: string) => void): this;
+ on(event: "messageBuffer", cb: (channel: Buffer, message: Buffer) => void): this;
+ once(event: "messageBuffer", cb: (channel: Buffer, message: Buffer) => void): this;
+ on(event: "pmessage", cb: (pattern: string, channel: string, message: string) => void): this;
+ once(event: "pmessage", cb: (pattern: string, channel: string, message: string) => void): this;
+ on(event: "pmessageBuffer", cb: (pattern: string, channel: Buffer, message: Buffer) => void): this;
+ once(event: "pmessageBuffer", cb: (pattern: string, channel: Buffer, message: Buffer) => void): this;
+ on(event: "error", cb: (error: Error) => void): this;
+ once(event: "error", cb: (error: Error) => void): this;
+ on(event: RedisStatus, cb: () => void): this;
+ once(event: RedisStatus, cb: () => void): this;
+ on(event: string | symbol, listener: (...args: any[]) => void): this;
+ once(event: string | symbol, listener: (...args: any[]) => void): this;
+}
+interface Redis extends Transaction {
+}
+export default Redis;
diff --git a/backend/node_modules/ioredis/built/Redis.js b/backend/node_modules/ioredis/built/Redis.js
new file mode 100644
index 0000000..6c9bdfd
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Redis.js
@@ -0,0 +1,745 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const commands_1 = require("@ioredis/commands");
+const events_1 = require("events");
+const standard_as_callback_1 = require("standard-as-callback");
+const cluster_1 = require("./cluster");
+const Command_1 = require("./Command");
+const connectors_1 = require("./connectors");
+const SentinelConnector_1 = require("./connectors/SentinelConnector");
+const eventHandler = require("./redis/event_handler");
+const RedisOptions_1 = require("./redis/RedisOptions");
+const ScanStream_1 = require("./ScanStream");
+const transaction_1 = require("./transaction");
+const utils_1 = require("./utils");
+const applyMixin_1 = require("./utils/applyMixin");
+const Commander_1 = require("./utils/Commander");
+const lodash_1 = require("./utils/lodash");
+const Deque = require("denque");
+const debug = (0, utils_1.Debug)("redis");
+/**
+ * This is the major component of ioredis.
+ * Use it to connect to a standalone Redis server or Sentinels.
+ *
+ * ```typescript
+ * const redis = new Redis(); // Default port is 6379
+ * async function main() {
+ * redis.set("foo", "bar");
+ * redis.get("foo", (err, result) => {
+ * // `result` should be "bar"
+ * console.log(err, result);
+ * });
+ * // Or use Promise
+ * const result = await redis.get("foo");
+ * }
+ * ```
+ */
+class Redis extends Commander_1.default {
+ constructor(arg1, arg2, arg3) {
+ super();
+ this.status = "wait";
+ /**
+ * @ignore
+ */
+ this.isCluster = false;
+ this.reconnectTimeout = null;
+ this.connectionEpoch = 0;
+ this.retryAttempts = 0;
+ this.manuallyClosing = false;
+ // Prepare autopipelines structures
+ this._autoPipelines = new Map();
+ this._runningAutoPipelines = new Set();
+ this.parseOptions(arg1, arg2, arg3);
+ events_1.EventEmitter.call(this);
+ this.resetCommandQueue();
+ this.resetOfflineQueue();
+ if (this.options.Connector) {
+ this.connector = new this.options.Connector(this.options);
+ }
+ else if (this.options.sentinels) {
+ const sentinelConnector = new SentinelConnector_1.default(this.options);
+ sentinelConnector.emitter = this;
+ this.connector = sentinelConnector;
+ }
+ else {
+ this.connector = new connectors_1.StandaloneConnector(this.options);
+ }
+ if (this.options.scripts) {
+ Object.entries(this.options.scripts).forEach(([name, definition]) => {
+ this.defineCommand(name, definition);
+ });
+ }
+ // end(or wait) -> connecting -> connect -> ready -> end
+ if (this.options.lazyConnect) {
+ this.setStatus("wait");
+ }
+ else {
+ this.connect().catch(lodash_1.noop);
+ }
+ }
+ /**
+ * Create a Redis instance.
+ * This is the same as `new Redis()` but is included for compatibility with node-redis.
+ */
+ static createClient(...args) {
+ return new Redis(...args);
+ }
+ get autoPipelineQueueSize() {
+ let queued = 0;
+ for (const pipeline of this._autoPipelines.values()) {
+ queued += pipeline.length;
+ }
+ return queued;
+ }
+ /**
+ * Create a connection to Redis.
+ * This method will be invoked automatically when creating a new Redis instance
+ * unless `lazyConnect: true` is passed.
+ *
+ * When calling this method manually, a Promise is returned, which will
+ * be resolved when the connection status is ready. The promise can reject
+ * if the connection fails, times out, or if Redis is already connecting/connected.
+ */
+ connect(callback) {
+ const promise = new Promise((resolve, reject) => {
+ if (this.status === "connecting" ||
+ this.status === "connect" ||
+ this.status === "ready") {
+ reject(new Error("Redis is already connecting/connected"));
+ return;
+ }
+ this.connectionEpoch += 1;
+ this.setStatus("connecting");
+ const { options } = this;
+ this.condition = {
+ select: options.db,
+ auth: options.username
+ ? [options.username, options.password]
+ : options.password,
+ subscriber: false,
+ };
+ const _this = this;
+ (0, standard_as_callback_1.default)(this.connector.connect(function (type, err) {
+ _this.silentEmit(type, err);
+ }), function (err, stream) {
+ if (err) {
+ _this.flushQueue(err);
+ _this.silentEmit("error", err);
+ reject(err);
+ _this.setStatus("end");
+ return;
+ }
+ let CONNECT_EVENT = options.tls ? "secureConnect" : "connect";
+ if ("sentinels" in options &&
+ options.sentinels &&
+ !options.enableTLSForSentinelMode) {
+ CONNECT_EVENT = "connect";
+ }
+ _this.stream = stream;
+ if (options.noDelay) {
+ stream.setNoDelay(true);
+ }
+ // Node ignores setKeepAlive before connect, therefore we wait for the event:
+ // https://github.com/nodejs/node/issues/31663
+ if (typeof options.keepAlive === "number") {
+ if (stream.connecting) {
+ stream.once(CONNECT_EVENT, () => {
+ stream.setKeepAlive(true, options.keepAlive);
+ });
+ }
+ else {
+ stream.setKeepAlive(true, options.keepAlive);
+ }
+ }
+ if (stream.connecting) {
+ stream.once(CONNECT_EVENT, eventHandler.connectHandler(_this));
+ if (options.connectTimeout) {
+ /*
+ * Typically, Socket#setTimeout(0) will clear the timer
+ * set before. However, in some platforms (Electron 3.x~4.x),
+ * the timer will not be cleared. So we introduce a variable here.
+ *
+ * See https://github.com/electron/electron/issues/14915
+ */
+ let connectTimeoutCleared = false;
+ stream.setTimeout(options.connectTimeout, function () {
+ if (connectTimeoutCleared) {
+ return;
+ }
+ stream.setTimeout(0);
+ stream.destroy();
+ const err = new Error("connect ETIMEDOUT");
+ // @ts-expect-error
+ err.errorno = "ETIMEDOUT";
+ // @ts-expect-error
+ err.code = "ETIMEDOUT";
+ // @ts-expect-error
+ err.syscall = "connect";
+ eventHandler.errorHandler(_this)(err);
+ });
+ stream.once(CONNECT_EVENT, function () {
+ connectTimeoutCleared = true;
+ stream.setTimeout(0);
+ });
+ }
+ }
+ else if (stream.destroyed) {
+ const firstError = _this.connector.firstError;
+ if (firstError) {
+ process.nextTick(() => {
+ eventHandler.errorHandler(_this)(firstError);
+ });
+ }
+ process.nextTick(eventHandler.closeHandler(_this));
+ }
+ else {
+ process.nextTick(eventHandler.connectHandler(_this));
+ }
+ if (!stream.destroyed) {
+ stream.once("error", eventHandler.errorHandler(_this));
+ stream.once("close", eventHandler.closeHandler(_this));
+ }
+ const connectionReadyHandler = function () {
+ _this.removeListener("close", connectionCloseHandler);
+ resolve();
+ };
+ var connectionCloseHandler = function () {
+ _this.removeListener("ready", connectionReadyHandler);
+ reject(new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG));
+ };
+ _this.once("ready", connectionReadyHandler);
+ _this.once("close", connectionCloseHandler);
+ });
+ });
+ return (0, standard_as_callback_1.default)(promise, callback);
+ }
+ /**
+ * Disconnect from Redis.
+ *
+ * This method closes the connection immediately,
+ * and may lose some pending replies that haven't written to client.
+ * If you want to wait for the pending replies, use Redis#quit instead.
+ */
+ disconnect(reconnect = false) {
+ if (!reconnect) {
+ this.manuallyClosing = true;
+ }
+ if (this.reconnectTimeout && !reconnect) {
+ clearTimeout(this.reconnectTimeout);
+ this.reconnectTimeout = null;
+ }
+ if (this.status === "wait") {
+ eventHandler.closeHandler(this)();
+ }
+ else {
+ this.connector.disconnect();
+ }
+ }
+ /**
+ * Disconnect from Redis.
+ *
+ * @deprecated
+ */
+ end() {
+ this.disconnect();
+ }
+ /**
+ * Create a new instance with the same options as the current one.
+ *
+ * @example
+ * ```js
+ * var redis = new Redis(6380);
+ * var anotherRedis = redis.duplicate();
+ * ```
+ */
+ duplicate(override) {
+ return new Redis({ ...this.options, ...override });
+ }
+ /**
+ * Mode of the connection.
+ *
+ * One of `"normal"`, `"subscriber"`, or `"monitor"`. When the connection is
+ * not in `"normal"` mode, certain commands are not allowed.
+ */
+ get mode() {
+ var _a;
+ return this.options.monitor
+ ? "monitor"
+ : ((_a = this.condition) === null || _a === void 0 ? void 0 : _a.subscriber)
+ ? "subscriber"
+ : "normal";
+ }
+ /**
+ * Listen for all requests received by the server in real time.
+ *
+ * This command will create a new connection to Redis and send a
+ * MONITOR command via the new connection in order to avoid disturbing
+ * the current connection.
+ *
+ * @param callback The callback function. If omit, a promise will be returned.
+ * @example
+ * ```js
+ * var redis = new Redis();
+ * redis.monitor(function (err, monitor) {
+ * // Entering monitoring mode.
+ * monitor.on('monitor', function (time, args, source, database) {
+ * console.log(time + ": " + util.inspect(args));
+ * });
+ * });
+ *
+ * // supports promise as well as other commands
+ * redis.monitor().then(function (monitor) {
+ * monitor.on('monitor', function (time, args, source, database) {
+ * console.log(time + ": " + util.inspect(args));
+ * });
+ * });
+ * ```
+ */
+ monitor(callback) {
+ const monitorInstance = this.duplicate({
+ monitor: true,
+ lazyConnect: false,
+ });
+ return (0, standard_as_callback_1.default)(new Promise(function (resolve, reject) {
+ monitorInstance.once("error", reject);
+ monitorInstance.once("monitoring", function () {
+ resolve(monitorInstance);
+ });
+ }), callback);
+ }
+ /**
+ * Send a command to Redis
+ *
+ * This method is used internally and in most cases you should not
+ * use it directly. If you need to send a command that is not supported
+ * by the library, you can use the `call` method:
+ *
+ * ```js
+ * const redis = new Redis();
+ *
+ * redis.call('set', 'foo', 'bar');
+ * // or
+ * redis.call(['set', 'foo', 'bar']);
+ * ```
+ *
+ * @ignore
+ */
+ sendCommand(command, stream) {
+ var _a, _b;
+ if (this.status === "wait") {
+ this.connect().catch(lodash_1.noop);
+ }
+ if (this.status === "end") {
+ command.reject(new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG));
+ return command.promise;
+ }
+ if (((_a = this.condition) === null || _a === void 0 ? void 0 : _a.subscriber) &&
+ !Command_1.default.checkFlag("VALID_IN_SUBSCRIBER_MODE", command.name)) {
+ command.reject(new Error("Connection in subscriber mode, only subscriber commands may be used"));
+ return command.promise;
+ }
+ if (typeof this.options.commandTimeout === "number") {
+ command.setTimeout(this.options.commandTimeout);
+ }
+ const blockingTimeout = this.getBlockingTimeoutInMs(command);
+ let writable = this.status === "ready" ||
+ (!stream &&
+ this.status === "connect" &&
+ (0, commands_1.exists)(command.name, { caseInsensitive: true }) &&
+ ((0, commands_1.hasFlag)(command.name, "loading", { nameCaseInsensitive: true }) ||
+ Command_1.default.checkFlag("HANDSHAKE_COMMANDS", command.name)));
+ if (!this.stream) {
+ writable = false;
+ }
+ else if (!this.stream.writable) {
+ writable = false;
+ // @ts-expect-error
+ }
+ else if (this.stream._writableState && this.stream._writableState.ended) {
+ // TODO: We should be able to remove this as the PR has already been merged.
+ // https://github.com/iojs/io.js/pull/1217
+ writable = false;
+ }
+ if (!writable) {
+ if (!this.options.enableOfflineQueue) {
+ command.reject(new Error("Stream isn't writeable and enableOfflineQueue options is false"));
+ return command.promise;
+ }
+ if (command.name === "quit" && this.offlineQueue.length === 0) {
+ this.disconnect();
+ command.resolve(Buffer.from("OK"));
+ return command.promise;
+ }
+ // @ts-expect-error
+ if (debug.enabled) {
+ debug("queue command[%s]: %d -> %s(%o)", this._getDescription(), this.condition.select, command.name, command.args);
+ }
+ this.offlineQueue.push({
+ command: command,
+ stream: stream,
+ select: this.condition.select,
+ });
+ // For blocking commands in the offline queue, arm a client-side timeout
+ // only when blockingTimeout is configured. Without this option, queued
+ // blocking commands may wait indefinitely on a dead connection.
+ if (Command_1.default.checkFlag("BLOCKING_COMMANDS", command.name)) {
+ const offlineTimeout = this.getConfiguredBlockingTimeout();
+ if (offlineTimeout !== undefined) {
+ command.setBlockingTimeout(offlineTimeout);
+ }
+ }
+ }
+ else {
+ // @ts-expect-error
+ if (debug.enabled) {
+ debug("write command[%s]: %d -> %s(%o)", this._getDescription(), (_b = this.condition) === null || _b === void 0 ? void 0 : _b.select, command.name, command.args);
+ }
+ if (stream) {
+ if ("isPipeline" in stream && stream.isPipeline) {
+ stream.write(command.toWritable(stream.destination.redis.stream));
+ }
+ else {
+ stream.write(command.toWritable(stream));
+ }
+ }
+ else {
+ this.stream.write(command.toWritable(this.stream));
+ }
+ this.commandQueue.push({
+ command: command,
+ stream: stream,
+ select: this.condition.select,
+ });
+ if (blockingTimeout !== undefined) {
+ command.setBlockingTimeout(blockingTimeout);
+ }
+ if (Command_1.default.checkFlag("WILL_DISCONNECT", command.name)) {
+ this.manuallyClosing = true;
+ }
+ if (this.options.socketTimeout !== undefined && this.socketTimeoutTimer === undefined) {
+ this.setSocketTimeout();
+ }
+ }
+ if (command.name === "select" && (0, utils_1.isInt)(command.args[0])) {
+ const db = parseInt(command.args[0], 10);
+ if (this.condition.select !== db) {
+ this.condition.select = db;
+ this.emit("select", db);
+ debug("switch to db [%d]", this.condition.select);
+ }
+ }
+ return command.promise;
+ }
+ getBlockingTimeoutInMs(command) {
+ var _a;
+ if (!Command_1.default.checkFlag("BLOCKING_COMMANDS", command.name)) {
+ return undefined;
+ }
+ // Feature is opt-in: only enabled when blockingTimeout is set to a positive number
+ const configuredTimeout = this.getConfiguredBlockingTimeout();
+ if (configuredTimeout === undefined) {
+ return undefined;
+ }
+ const timeout = command.extractBlockingTimeout();
+ if (typeof timeout === "number") {
+ if (timeout > 0) {
+ // Finite timeout from command args - add grace period
+ return timeout + ((_a = this.options.blockingTimeoutGrace) !== null && _a !== void 0 ? _a : RedisOptions_1.DEFAULT_REDIS_OPTIONS.blockingTimeoutGrace);
+ }
+ // Command has timeout=0 (block forever), use blockingTimeout option as safety net
+ return configuredTimeout;
+ }
+ if (timeout === null) {
+ // No BLOCK option found (e.g., XREAD without BLOCK), use blockingTimeout as safety net
+ return configuredTimeout;
+ }
+ return undefined;
+ }
+ getConfiguredBlockingTimeout() {
+ if (typeof this.options.blockingTimeout === "number" &&
+ this.options.blockingTimeout > 0) {
+ return this.options.blockingTimeout;
+ }
+ return undefined;
+ }
+ setSocketTimeout() {
+ this.socketTimeoutTimer = setTimeout(() => {
+ this.stream.destroy(new Error(`Socket timeout. Expecting data, but didn't receive any in ${this.options.socketTimeout}ms.`));
+ this.socketTimeoutTimer = undefined;
+ }, this.options.socketTimeout);
+ // this handler must run after the "data" handler in "DataHandler"
+ // so that `this.commandQueue.length` will be updated
+ this.stream.once("data", () => {
+ clearTimeout(this.socketTimeoutTimer);
+ this.socketTimeoutTimer = undefined;
+ if (this.commandQueue.length === 0)
+ return;
+ this.setSocketTimeout();
+ });
+ }
+ scanStream(options) {
+ return this.createScanStream("scan", { options });
+ }
+ scanBufferStream(options) {
+ return this.createScanStream("scanBuffer", { options });
+ }
+ sscanStream(key, options) {
+ return this.createScanStream("sscan", { key, options });
+ }
+ sscanBufferStream(key, options) {
+ return this.createScanStream("sscanBuffer", { key, options });
+ }
+ hscanStream(key, options) {
+ return this.createScanStream("hscan", { key, options });
+ }
+ hscanBufferStream(key, options) {
+ return this.createScanStream("hscanBuffer", { key, options });
+ }
+ zscanStream(key, options) {
+ return this.createScanStream("zscan", { key, options });
+ }
+ zscanBufferStream(key, options) {
+ return this.createScanStream("zscanBuffer", { key, options });
+ }
+ /**
+ * Emit only when there's at least one listener.
+ *
+ * @ignore
+ */
+ silentEmit(eventName, arg) {
+ let error;
+ if (eventName === "error") {
+ error = arg;
+ if (this.status === "end") {
+ return;
+ }
+ if (this.manuallyClosing) {
+ // ignore connection related errors when manually disconnecting
+ if (error instanceof Error &&
+ (error.message === utils_1.CONNECTION_CLOSED_ERROR_MSG ||
+ // @ts-expect-error
+ error.syscall === "connect" ||
+ // @ts-expect-error
+ error.syscall === "read")) {
+ return;
+ }
+ }
+ }
+ if (this.listeners(eventName).length > 0) {
+ return this.emit.apply(this, arguments);
+ }
+ if (error && error instanceof Error) {
+ console.error("[ioredis] Unhandled error event:", error.stack);
+ }
+ return false;
+ }
+ /**
+ * @ignore
+ */
+ recoverFromFatalError(_commandError, err, options) {
+ this.flushQueue(err, options);
+ this.silentEmit("error", err);
+ this.disconnect(true);
+ }
+ /**
+ * @ignore
+ */
+ handleReconnection(err, item) {
+ var _a;
+ let needReconnect = false;
+ if (this.options.reconnectOnError &&
+ !Command_1.default.checkFlag("IGNORE_RECONNECT_ON_ERROR", item.command.name)) {
+ needReconnect = this.options.reconnectOnError(err);
+ }
+ switch (needReconnect) {
+ case 1:
+ case true:
+ if (this.status !== "reconnecting") {
+ this.disconnect(true);
+ }
+ item.command.reject(err);
+ break;
+ case 2:
+ if (this.status !== "reconnecting") {
+ this.disconnect(true);
+ }
+ if (((_a = this.condition) === null || _a === void 0 ? void 0 : _a.select) !== item.select &&
+ item.command.name !== "select") {
+ this.select(item.select);
+ }
+ // TODO
+ // @ts-expect-error
+ this.sendCommand(item.command);
+ break;
+ default:
+ item.command.reject(err);
+ }
+ }
+ /**
+ * Get description of the connection. Used for debugging.
+ */
+ _getDescription() {
+ let description;
+ if ("path" in this.options && this.options.path) {
+ description = this.options.path;
+ }
+ else if (this.stream &&
+ this.stream.remoteAddress &&
+ this.stream.remotePort) {
+ description = this.stream.remoteAddress + ":" + this.stream.remotePort;
+ }
+ else if ("host" in this.options && this.options.host) {
+ description = this.options.host + ":" + this.options.port;
+ }
+ else {
+ // Unexpected
+ description = "";
+ }
+ if (this.options.connectionName) {
+ description += ` (${this.options.connectionName})`;
+ }
+ return description;
+ }
+ resetCommandQueue() {
+ this.commandQueue = new Deque();
+ }
+ resetOfflineQueue() {
+ this.offlineQueue = new Deque();
+ }
+ parseOptions(...args) {
+ const options = {};
+ let isTls = false;
+ for (let i = 0; i < args.length; ++i) {
+ const arg = args[i];
+ if (arg === null || typeof arg === "undefined") {
+ continue;
+ }
+ if (typeof arg === "object") {
+ (0, lodash_1.defaults)(options, arg);
+ }
+ else if (typeof arg === "string") {
+ (0, lodash_1.defaults)(options, (0, utils_1.parseURL)(arg));
+ if (arg.startsWith("rediss://")) {
+ isTls = true;
+ }
+ }
+ else if (typeof arg === "number") {
+ options.port = arg;
+ }
+ else {
+ throw new Error("Invalid argument " + arg);
+ }
+ }
+ if (isTls) {
+ (0, lodash_1.defaults)(options, { tls: true });
+ }
+ (0, lodash_1.defaults)(options, Redis.defaultOptions);
+ if (typeof options.port === "string") {
+ options.port = parseInt(options.port, 10);
+ }
+ if (typeof options.db === "string") {
+ options.db = parseInt(options.db, 10);
+ }
+ // @ts-expect-error
+ this.options = (0, utils_1.resolveTLSProfile)(options);
+ }
+ /**
+ * Change instance's status
+ */
+ setStatus(status, arg) {
+ // @ts-expect-error
+ if (debug.enabled) {
+ debug("status[%s]: %s -> %s", this._getDescription(), this.status || "[empty]", status);
+ }
+ this.status = status;
+ process.nextTick(this.emit.bind(this, status, arg));
+ }
+ createScanStream(command, { key, options = {} }) {
+ return new ScanStream_1.default({
+ objectMode: true,
+ key: key,
+ redis: this,
+ command: command,
+ ...options,
+ });
+ }
+ /**
+ * Flush offline queue and command queue with error.
+ *
+ * @param error The error object to send to the commands
+ * @param options options
+ */
+ flushQueue(error, options) {
+ options = (0, lodash_1.defaults)({}, options, {
+ offlineQueue: true,
+ commandQueue: true,
+ });
+ let item;
+ if (options.offlineQueue) {
+ while ((item = this.offlineQueue.shift())) {
+ item.command.reject(error);
+ }
+ }
+ if (options.commandQueue) {
+ if (this.commandQueue.length > 0) {
+ if (this.stream) {
+ this.stream.removeAllListeners("data");
+ }
+ while ((item = this.commandQueue.shift())) {
+ item.command.reject(error);
+ }
+ }
+ }
+ }
+ /**
+ * Check whether Redis has finished loading the persistent data and is able to
+ * process commands.
+ */
+ _readyCheck(callback) {
+ const _this = this;
+ this.info(function (err, res) {
+ if (err) {
+ if (err.message && err.message.includes("NOPERM")) {
+ console.warn(`Skipping the ready check because INFO command fails: "${err.message}". You can disable ready check with "enableReadyCheck". More: https://github.com/luin/ioredis/wiki/Disable-ready-check.`);
+ return callback(null, {});
+ }
+ return callback(err);
+ }
+ if (typeof res !== "string") {
+ return callback(null, res);
+ }
+ const info = {};
+ const lines = res.split("\r\n");
+ for (let i = 0; i < lines.length; ++i) {
+ const [fieldName, ...fieldValueParts] = lines[i].split(":");
+ const fieldValue = fieldValueParts.join(":");
+ if (fieldValue) {
+ info[fieldName] = fieldValue;
+ }
+ }
+ if (!info.loading || info.loading === "0") {
+ callback(null, info);
+ }
+ else {
+ const loadingEtaMs = (info.loading_eta_seconds || 1) * 1000;
+ const retryTime = _this.options.maxLoadingRetryTime &&
+ _this.options.maxLoadingRetryTime < loadingEtaMs
+ ? _this.options.maxLoadingRetryTime
+ : loadingEtaMs;
+ debug("Redis server still loading, trying again in " + retryTime + "ms");
+ setTimeout(function () {
+ _this._readyCheck(callback);
+ }, retryTime);
+ }
+ }).catch(lodash_1.noop);
+ }
+}
+Redis.Cluster = cluster_1.default;
+Redis.Command = Command_1.default;
+/**
+ * Default options
+ */
+Redis.defaultOptions = RedisOptions_1.DEFAULT_REDIS_OPTIONS;
+(0, applyMixin_1.default)(Redis, events_1.EventEmitter);
+(0, transaction_1.addTransactionSupport)(Redis.prototype);
+exports.default = Redis;
diff --git a/backend/node_modules/ioredis/built/ScanStream.d.ts b/backend/node_modules/ioredis/built/ScanStream.d.ts
new file mode 100644
index 0000000..38c3803
--- /dev/null
+++ b/backend/node_modules/ioredis/built/ScanStream.d.ts
@@ -0,0 +1,23 @@
+///
+import { Readable, ReadableOptions } from "stream";
+interface Options extends ReadableOptions {
+ key?: string;
+ match?: string;
+ type?: string;
+ command: string;
+ redis: any;
+ count?: string | number;
+ noValues?: boolean;
+}
+/**
+ * Convenient class to convert the process of scanning keys to a readable stream.
+ */
+export default class ScanStream extends Readable {
+ private opt;
+ private _redisCursor;
+ private _redisDrained;
+ constructor(opt: Options);
+ _read(): void;
+ close(): void;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/ScanStream.js b/backend/node_modules/ioredis/built/ScanStream.js
new file mode 100644
index 0000000..3abecaf
--- /dev/null
+++ b/backend/node_modules/ioredis/built/ScanStream.js
@@ -0,0 +1,51 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const stream_1 = require("stream");
+/**
+ * Convenient class to convert the process of scanning keys to a readable stream.
+ */
+class ScanStream extends stream_1.Readable {
+ constructor(opt) {
+ super(opt);
+ this.opt = opt;
+ this._redisCursor = "0";
+ this._redisDrained = false;
+ }
+ _read() {
+ if (this._redisDrained) {
+ this.push(null);
+ return;
+ }
+ const args = [this._redisCursor];
+ if (this.opt.key) {
+ args.unshift(this.opt.key);
+ }
+ if (this.opt.match) {
+ args.push("MATCH", this.opt.match);
+ }
+ if (this.opt.type) {
+ args.push("TYPE", this.opt.type);
+ }
+ if (this.opt.count) {
+ args.push("COUNT", String(this.opt.count));
+ }
+ if (this.opt.noValues) {
+ args.push("NOVALUES");
+ }
+ this.opt.redis[this.opt.command](args, (err, res) => {
+ if (err) {
+ this.emit("error", err);
+ return;
+ }
+ this._redisCursor = res[0] instanceof Buffer ? res[0].toString() : res[0];
+ if (this._redisCursor === "0") {
+ this._redisDrained = true;
+ }
+ this.push(res[1]);
+ });
+ }
+ close() {
+ this._redisDrained = true;
+ }
+}
+exports.default = ScanStream;
diff --git a/backend/node_modules/ioredis/built/Script.d.ts b/backend/node_modules/ioredis/built/Script.d.ts
new file mode 100644
index 0000000..b17f4d8
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Script.d.ts
@@ -0,0 +1,11 @@
+import { Callback } from "./types";
+export default class Script {
+ private lua;
+ private numberOfKeys;
+ private keyPrefix;
+ private readOnly;
+ private sha;
+ private Command;
+ constructor(lua: string, numberOfKeys?: number | null, keyPrefix?: string, readOnly?: boolean);
+ execute(container: any, args: any[], options: any, callback?: Callback): any;
+}
diff --git a/backend/node_modules/ioredis/built/Script.js b/backend/node_modules/ioredis/built/Script.js
new file mode 100644
index 0000000..34ea485
--- /dev/null
+++ b/backend/node_modules/ioredis/built/Script.js
@@ -0,0 +1,62 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const crypto_1 = require("crypto");
+const Command_1 = require("./Command");
+const standard_as_callback_1 = require("standard-as-callback");
+class Script {
+ constructor(lua, numberOfKeys = null, keyPrefix = "", readOnly = false) {
+ this.lua = lua;
+ this.numberOfKeys = numberOfKeys;
+ this.keyPrefix = keyPrefix;
+ this.readOnly = readOnly;
+ this.sha = (0, crypto_1.createHash)("sha1").update(lua).digest("hex");
+ const sha = this.sha;
+ const socketHasScriptLoaded = new WeakSet();
+ this.Command = class CustomScriptCommand extends Command_1.default {
+ toWritable(socket) {
+ const origReject = this.reject;
+ this.reject = (err) => {
+ if (err.message.indexOf("NOSCRIPT") !== -1) {
+ socketHasScriptLoaded.delete(socket);
+ }
+ origReject.call(this, err);
+ };
+ if (!socketHasScriptLoaded.has(socket)) {
+ socketHasScriptLoaded.add(socket);
+ this.name = "eval";
+ this.args[0] = lua;
+ }
+ else if (this.name === "eval") {
+ this.name = "evalsha";
+ this.args[0] = sha;
+ }
+ return super.toWritable(socket);
+ }
+ };
+ }
+ execute(container, args, options, callback) {
+ if (typeof this.numberOfKeys === "number") {
+ args.unshift(this.numberOfKeys);
+ }
+ if (this.keyPrefix) {
+ options.keyPrefix = this.keyPrefix;
+ }
+ if (this.readOnly) {
+ options.readOnly = true;
+ }
+ const evalsha = new this.Command("evalsha", [this.sha, ...args], options);
+ evalsha.promise = evalsha.promise.catch((err) => {
+ if (err.message.indexOf("NOSCRIPT") === -1) {
+ throw err;
+ }
+ // Resend the same custom evalsha command that gets transformed
+ // to an eval in case it's not loaded yet on the connection.
+ const resend = new this.Command("evalsha", [this.sha, ...args], options);
+ const client = container.isPipeline ? container.redis : container;
+ return client.sendCommand(resend);
+ });
+ (0, standard_as_callback_1.default)(evalsha.promise, callback);
+ return container.sendCommand(evalsha);
+ }
+}
+exports.default = Script;
diff --git a/backend/node_modules/ioredis/built/SubscriptionSet.d.ts b/backend/node_modules/ioredis/built/SubscriptionSet.d.ts
new file mode 100644
index 0000000..2b5c7cc
--- /dev/null
+++ b/backend/node_modules/ioredis/built/SubscriptionSet.d.ts
@@ -0,0 +1,14 @@
+import { CommandNameFlags } from "./Command";
+declare type AddSet = CommandNameFlags["ENTER_SUBSCRIBER_MODE"][number];
+declare type DelSet = CommandNameFlags["EXIT_SUBSCRIBER_MODE"][number];
+/**
+ * Tiny class to simplify dealing with subscription set
+ */
+export default class SubscriptionSet {
+ private set;
+ add(set: AddSet, channel: string): void;
+ del(set: DelSet, channel: string): void;
+ channels(set: AddSet | DelSet): string[];
+ isEmpty(): boolean;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/SubscriptionSet.js b/backend/node_modules/ioredis/built/SubscriptionSet.js
new file mode 100644
index 0000000..df39e61
--- /dev/null
+++ b/backend/node_modules/ioredis/built/SubscriptionSet.js
@@ -0,0 +1,41 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Tiny class to simplify dealing with subscription set
+ */
+class SubscriptionSet {
+ constructor() {
+ this.set = {
+ subscribe: {},
+ psubscribe: {},
+ ssubscribe: {},
+ };
+ }
+ add(set, channel) {
+ this.set[mapSet(set)][channel] = true;
+ }
+ del(set, channel) {
+ delete this.set[mapSet(set)][channel];
+ }
+ channels(set) {
+ return Object.keys(this.set[mapSet(set)]);
+ }
+ isEmpty() {
+ return (this.channels("subscribe").length === 0 &&
+ this.channels("psubscribe").length === 0 &&
+ this.channels("ssubscribe").length === 0);
+ }
+}
+exports.default = SubscriptionSet;
+function mapSet(set) {
+ if (set === "unsubscribe") {
+ return "subscribe";
+ }
+ if (set === "punsubscribe") {
+ return "psubscribe";
+ }
+ if (set === "sunsubscribe") {
+ return "ssubscribe";
+ }
+ return set;
+}
diff --git a/backend/node_modules/ioredis/built/autoPipelining.d.ts b/backend/node_modules/ioredis/built/autoPipelining.d.ts
new file mode 100644
index 0000000..64505fc
--- /dev/null
+++ b/backend/node_modules/ioredis/built/autoPipelining.d.ts
@@ -0,0 +1,8 @@
+///
+import { ArgumentType } from "./Command";
+export declare const kExec: unique symbol;
+export declare const kCallbacks: unique symbol;
+export declare const notAllowedAutoPipelineCommands: string[];
+export declare function shouldUseAutoPipelining(client: any, functionName: string, commandName: string): boolean;
+export declare function getFirstValueInFlattenedArray(args: ArgumentType[]): string | Buffer | number | null | undefined;
+export declare function executeWithAutoPipelining(client: any, functionName: string, commandName: string, args: ArgumentType[], callback: any): Promise;
diff --git a/backend/node_modules/ioredis/built/autoPipelining.js b/backend/node_modules/ioredis/built/autoPipelining.js
new file mode 100644
index 0000000..b3d416a
--- /dev/null
+++ b/backend/node_modules/ioredis/built/autoPipelining.js
@@ -0,0 +1,167 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.executeWithAutoPipelining = exports.getFirstValueInFlattenedArray = exports.shouldUseAutoPipelining = exports.notAllowedAutoPipelineCommands = exports.kCallbacks = exports.kExec = void 0;
+const lodash_1 = require("./utils/lodash");
+const calculateSlot = require("cluster-key-slot");
+const standard_as_callback_1 = require("standard-as-callback");
+const commands_1 = require("@ioredis/commands");
+exports.kExec = Symbol("exec");
+exports.kCallbacks = Symbol("callbacks");
+exports.notAllowedAutoPipelineCommands = [
+ "auth",
+ "info",
+ "script",
+ "quit",
+ "cluster",
+ "pipeline",
+ "multi",
+ "subscribe",
+ "psubscribe",
+ "unsubscribe",
+ "unpsubscribe",
+ "select",
+ "client",
+];
+function executeAutoPipeline(client, slotKey) {
+ /*
+ If a pipeline is already executing, keep queueing up commands
+ since ioredis won't serve two pipelines at the same time
+ */
+ if (client._runningAutoPipelines.has(slotKey)) {
+ return;
+ }
+ if (!client._autoPipelines.has(slotKey)) {
+ /*
+ Rare edge case. Somehow, something has deleted this running autopipeline in an immediate
+ call to executeAutoPipeline.
+
+ Maybe the callback in the pipeline.exec is sometimes called in the same tick,
+ e.g. if redis is disconnected?
+ */
+ return;
+ }
+ client._runningAutoPipelines.add(slotKey);
+ // Get the pipeline and immediately delete it so that new commands are queued on a new pipeline
+ const pipeline = client._autoPipelines.get(slotKey);
+ client._autoPipelines.delete(slotKey);
+ const callbacks = pipeline[exports.kCallbacks];
+ // Stop keeping a reference to callbacks immediately after the callbacks stop being used.
+ // This allows the GC to reclaim objects referenced by callbacks, especially with 16384 slots
+ // in Redis.Cluster
+ pipeline[exports.kCallbacks] = null;
+ // Perform the call
+ pipeline.exec(function (err, results) {
+ client._runningAutoPipelines.delete(slotKey);
+ /*
+ Invoke all callback in nextTick so the stack is cleared
+ and callbacks can throw errors without affecting other callbacks.
+ */
+ if (err) {
+ for (let i = 0; i < callbacks.length; i++) {
+ process.nextTick(callbacks[i], err);
+ }
+ }
+ else {
+ for (let i = 0; i < callbacks.length; i++) {
+ process.nextTick(callbacks[i], ...results[i]);
+ }
+ }
+ // If there is another pipeline on the same node, immediately execute it without waiting for nextTick
+ if (client._autoPipelines.has(slotKey)) {
+ executeAutoPipeline(client, slotKey);
+ }
+ });
+}
+function shouldUseAutoPipelining(client, functionName, commandName) {
+ return (functionName &&
+ client.options.enableAutoPipelining &&
+ !client.isPipeline &&
+ !exports.notAllowedAutoPipelineCommands.includes(commandName) &&
+ !client.options.autoPipeliningIgnoredCommands.includes(commandName));
+}
+exports.shouldUseAutoPipelining = shouldUseAutoPipelining;
+function getFirstValueInFlattenedArray(args) {
+ for (let i = 0; i < args.length; i++) {
+ const arg = args[i];
+ if (typeof arg === "string") {
+ return arg;
+ }
+ else if (Array.isArray(arg) || (0, lodash_1.isArguments)(arg)) {
+ if (arg.length === 0) {
+ continue;
+ }
+ return arg[0];
+ }
+ const flattened = [arg].flat();
+ if (flattened.length > 0) {
+ return flattened[0];
+ }
+ }
+ return undefined;
+}
+exports.getFirstValueInFlattenedArray = getFirstValueInFlattenedArray;
+function executeWithAutoPipelining(client, functionName, commandName, args, callback) {
+ // On cluster mode let's wait for slots to be available
+ if (client.isCluster && !client.slots.length) {
+ if (client.status === "wait")
+ client.connect().catch(lodash_1.noop);
+ return (0, standard_as_callback_1.default)(new Promise(function (resolve, reject) {
+ client.delayUntilReady((err) => {
+ if (err) {
+ reject(err);
+ return;
+ }
+ executeWithAutoPipelining(client, functionName, commandName, args, null).then(resolve, reject);
+ });
+ }), callback);
+ }
+ // If we have slot information, we can improve routing by grouping slots served by the same subset of nodes
+ // Note that the first value in args may be a (possibly empty) array.
+ // ioredis will only flatten one level of the array, in the Command constructor.
+ const prefix = client.options.keyPrefix || "";
+ let slotKey = client.isCluster
+ ? client.slots[calculateSlot(`${prefix}${getFirstValueInFlattenedArray(args)}`)].join(",")
+ : "main";
+ // When scaleReads is enabled, separate read and write commands into different pipelines
+ // so they can be routed to replicas and masters respectively
+ if (client.isCluster && client.options.scaleReads !== "master") {
+ const isReadOnly = (0, commands_1.exists)(commandName) && (0, commands_1.hasFlag)(commandName, "readonly");
+ slotKey += isReadOnly ? ":read" : ":write";
+ }
+ if (!client._autoPipelines.has(slotKey)) {
+ const pipeline = client.pipeline();
+ pipeline[exports.kExec] = false;
+ pipeline[exports.kCallbacks] = [];
+ client._autoPipelines.set(slotKey, pipeline);
+ }
+ const pipeline = client._autoPipelines.get(slotKey);
+ /*
+ Mark the pipeline as scheduled.
+ The symbol will make sure that the pipeline is only scheduled once per tick.
+ New commands are appended to an already scheduled pipeline.
+ */
+ if (!pipeline[exports.kExec]) {
+ pipeline[exports.kExec] = true;
+ /*
+ Deferring with setImmediate so we have a chance to capture multiple
+ commands that can be scheduled by I/O events already in the event loop queue.
+ */
+ setImmediate(executeAutoPipeline, client, slotKey);
+ }
+ // Create the promise which will execute the command in the pipeline.
+ const autoPipelinePromise = new Promise(function (resolve, reject) {
+ pipeline[exports.kCallbacks].push(function (err, value) {
+ if (err) {
+ reject(err);
+ return;
+ }
+ resolve(value);
+ });
+ if (functionName === "call") {
+ args.unshift(commandName);
+ }
+ pipeline[functionName](...args);
+ });
+ return (0, standard_as_callback_1.default)(autoPipelinePromise, callback);
+}
+exports.executeWithAutoPipelining = executeWithAutoPipelining;
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterOptions.d.ts b/backend/node_modules/ioredis/built/cluster/ClusterOptions.d.ts
new file mode 100644
index 0000000..80c7e2c
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterOptions.d.ts
@@ -0,0 +1,172 @@
+///
+import { SrvRecord } from "dns";
+import { RedisOptions } from "../redis/RedisOptions";
+import { CommanderOptions } from "../utils/Commander";
+import { NodeRole } from "./util";
+export declare type DNSResolveSrvFunction = (hostname: string, callback: (err: NodeJS.ErrnoException | null | undefined, records?: SrvRecord[]) => void) => void;
+export declare type DNSLookupFunction = (hostname: string, callback: (err: NodeJS.ErrnoException | null | undefined, address: string, family?: number) => void) => void;
+export declare type NatMapFunction = (key: string) => {
+ host: string;
+ port: number;
+} | null;
+export declare type NatMap = {
+ [key: string]: {
+ host: string;
+ port: number;
+ };
+} | NatMapFunction;
+/**
+ * Options for Cluster constructor
+ */
+export interface ClusterOptions extends CommanderOptions {
+ /**
+ * See "Quick Start" section.
+ *
+ * @default (times) => Math.min(100 + times * 2, 2000)
+ */
+ clusterRetryStrategy?: ((times: number, reason?: Error) => number | void | null) | undefined;
+ /**
+ * See Redis class.
+ *
+ * @default true
+ */
+ enableOfflineQueue?: boolean | undefined;
+ /**
+ * When enabled, ioredis only emits "ready" event when `CLUSTER INFO`
+ * command reporting the cluster is ready for handling commands.
+ *
+ * @default true
+ */
+ enableReadyCheck?: boolean | undefined;
+ /**
+ * Scale reads to the node with the specified role.
+ *
+ * @default "master"
+ */
+ scaleReads?: NodeRole | Function | undefined;
+ /**
+ * When a MOVED or ASK error is received, client will redirect the
+ * command to another node.
+ * This option limits the max redirections allowed to send a command.
+ *
+ * @default 16
+ */
+ maxRedirections?: number | undefined;
+ /**
+ * When an error is received when sending a command (e.g.
+ * "Connection is closed." when the target Redis node is down), client will retry
+ * if `retryDelayOnFailover` is valid delay time (in ms).
+ *
+ * @default 100
+ */
+ retryDelayOnFailover?: number | undefined;
+ /**
+ * When a CLUSTERDOWN error is received, client will retry
+ * if `retryDelayOnClusterDown` is valid delay time (in ms).
+ *
+ * @default 100
+ */
+ retryDelayOnClusterDown?: number | undefined;
+ /**
+ * When a TRYAGAIN error is received, client will retry
+ * if `retryDelayOnTryAgain` is valid delay time (in ms).
+ *
+ * @default 100
+ */
+ retryDelayOnTryAgain?: number | undefined;
+ /**
+ * By default, this value is 0, which means when a `MOVED` error is received,
+ * the client will resend the command instantly to the node returned together with
+ * the `MOVED` error. However, sometimes it takes time for a cluster to become
+ * state stabilized after a failover, so adding a delay before resending can
+ * prevent a ping pong effect.
+ *
+ * @default 0
+ */
+ retryDelayOnMoved?: number | undefined;
+ /**
+ * The milliseconds before a timeout occurs while refreshing
+ * slots from the cluster.
+ *
+ * @default 1000
+ */
+ slotsRefreshTimeout?: number | undefined;
+ /**
+ * The milliseconds between every automatic slots refresh.
+ *
+ * @default 5000
+ */
+ slotsRefreshInterval?: number | undefined;
+ /**
+ * Use sharded subscribers instead of a single subscriber.
+ *
+ * If sharded subscribers are used, then one additional subscriber connection per master node
+ * is established. If you don't plan to use SPUBLISH/SSUBSCRIBE, then this should be disabled.
+ *
+ * @default false
+ */
+ shardedSubscribers?: boolean | undefined;
+ /**
+ * Passed to the constructor of `Redis`
+ *
+ * @default null
+ */
+ redisOptions?: Omit | undefined;
+ /**
+ * By default, When a new Cluster instance is created,
+ * it will connect to the Redis cluster automatically.
+ * If you want to keep the instance disconnected until the first command is called,
+ * set this option to `true`.
+ *
+ * @default false
+ */
+ lazyConnect?: boolean | undefined;
+ /**
+ * Discover nodes using SRV records
+ *
+ * @default false
+ */
+ useSRVRecords?: boolean | undefined;
+ /**
+ * SRV records will be resolved via this function.
+ *
+ * You may provide a custom `resolveSrv` function when you want to customize
+ * the cache behavior of the default function.
+ *
+ * @default require('dns').resolveSrv
+ */
+ resolveSrv?: DNSResolveSrvFunction | undefined;
+ /**
+ * Hostnames will be resolved to IP addresses via this function.
+ * This is needed when the addresses of startup nodes are hostnames instead
+ * of IPs.
+ *
+ * You may provide a custom `lookup` function when you want to customize
+ * the cache behavior of the default function.
+ *
+ * @default require('dns').lookup
+ */
+ dnsLookup?: DNSLookupFunction | undefined;
+ natMap?: NatMap | undefined;
+ /**
+ * See Redis class.
+ *
+ * @default false
+ */
+ enableAutoPipelining?: boolean | undefined;
+ /**
+ * See Redis class.
+ *
+ * @default []
+ */
+ autoPipeliningIgnoredCommands?: string[] | undefined;
+ /**
+ * Custom LUA commands
+ */
+ scripts?: Record | undefined;
+}
+export declare const DEFAULT_CLUSTER_OPTIONS: ClusterOptions;
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterOptions.js b/backend/node_modules/ioredis/built/cluster/ClusterOptions.js
new file mode 100644
index 0000000..8c3e2e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterOptions.js
@@ -0,0 +1,22 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DEFAULT_CLUSTER_OPTIONS = void 0;
+const dns_1 = require("dns");
+exports.DEFAULT_CLUSTER_OPTIONS = {
+ clusterRetryStrategy: (times) => Math.min(100 + times * 2, 2000),
+ enableOfflineQueue: true,
+ enableReadyCheck: true,
+ scaleReads: "master",
+ maxRedirections: 16,
+ retryDelayOnMoved: 0,
+ retryDelayOnFailover: 100,
+ retryDelayOnClusterDown: 100,
+ retryDelayOnTryAgain: 100,
+ slotsRefreshTimeout: 1000,
+ useSRVRecords: false,
+ resolveSrv: dns_1.resolveSrv,
+ dnsLookup: dns_1.lookup,
+ enableAutoPipelining: false,
+ autoPipeliningIgnoredCommands: [],
+ shardedSubscribers: false,
+};
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.d.ts b/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.d.ts
new file mode 100644
index 0000000..93a221a
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.d.ts
@@ -0,0 +1,29 @@
+///
+import { EventEmitter } from "events";
+import ConnectionPool from "./ConnectionPool";
+export default class ClusterSubscriber {
+ private connectionPool;
+ private emitter;
+ private isSharded;
+ private started;
+ private subscriber;
+ private lastActiveSubscriber;
+ private slotRange;
+ constructor(connectionPool: ConnectionPool, emitter: EventEmitter, isSharded?: boolean);
+ getInstance(): any;
+ /**
+ * Associate this subscriber to a specific slot range.
+ *
+ * Returns the range or an empty array if the slot range couldn't be associated.
+ *
+ * BTW: This is more for debugging and testing purposes.
+ *
+ * @param range
+ */
+ associateSlotRange(range: number[]): number[];
+ start(): void;
+ stop(): void;
+ isStarted(): boolean;
+ private onSubscriberEnd;
+ private selectSubscriber;
+}
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.js b/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.js
new file mode 100644
index 0000000..ceb02cd
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterSubscriber.js
@@ -0,0 +1,223 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const util_1 = require("./util");
+const utils_1 = require("../utils");
+const Redis_1 = require("../Redis");
+const debug = (0, utils_1.Debug)("cluster:subscriber");
+class ClusterSubscriber {
+ constructor(connectionPool, emitter, isSharded = false) {
+ this.connectionPool = connectionPool;
+ this.emitter = emitter;
+ this.isSharded = isSharded;
+ this.started = false;
+ //There is only one connection for the entire pool
+ this.subscriber = null;
+ //The slot range for which this subscriber is responsible
+ this.slotRange = [];
+ this.onSubscriberEnd = () => {
+ if (!this.started) {
+ debug("subscriber has disconnected, but ClusterSubscriber is not started, so not reconnecting.");
+ return;
+ }
+ // If the subscriber closes whilst it's still the active connection,
+ // we might as well try to connecting to a new node if possible to
+ // minimise the number of missed publishes.
+ debug("subscriber has disconnected, selecting a new one...");
+ this.selectSubscriber();
+ };
+ // If the current node we're using as the subscriber disappears
+ // from the node pool for some reason, we will select a new one
+ // to connect to.
+ // Note that this event is only triggered if the connection to
+ // the node has been used; cluster subscriptions are setup with
+ // lazyConnect = true. It's possible for the subscriber node to
+ // disappear without this method being called!
+ // See https://github.com/luin/ioredis/pull/1589
+ this.connectionPool.on("-node", (_, key) => {
+ if (!this.started || !this.subscriber) {
+ return;
+ }
+ if ((0, util_1.getNodeKey)(this.subscriber.options) === key) {
+ debug("subscriber has left, selecting a new one...");
+ this.selectSubscriber();
+ }
+ });
+ this.connectionPool.on("+node", () => {
+ if (!this.started || this.subscriber) {
+ return;
+ }
+ debug("a new node is discovered and there is no subscriber, selecting a new one...");
+ this.selectSubscriber();
+ });
+ }
+ getInstance() {
+ return this.subscriber;
+ }
+ /**
+ * Associate this subscriber to a specific slot range.
+ *
+ * Returns the range or an empty array if the slot range couldn't be associated.
+ *
+ * BTW: This is more for debugging and testing purposes.
+ *
+ * @param range
+ */
+ associateSlotRange(range) {
+ if (this.isSharded) {
+ this.slotRange = range;
+ }
+ return this.slotRange;
+ }
+ start() {
+ this.started = true;
+ this.selectSubscriber();
+ debug("started");
+ }
+ stop() {
+ this.started = false;
+ if (this.subscriber) {
+ this.subscriber.disconnect();
+ this.subscriber = null;
+ }
+ }
+ isStarted() {
+ return this.started;
+ }
+ selectSubscriber() {
+ const lastActiveSubscriber = this.lastActiveSubscriber;
+ // Disconnect the previous subscriber even if there
+ // will not be a new one.
+ if (lastActiveSubscriber) {
+ lastActiveSubscriber.off("end", this.onSubscriberEnd);
+ lastActiveSubscriber.disconnect();
+ }
+ if (this.subscriber) {
+ this.subscriber.off("end", this.onSubscriberEnd);
+ this.subscriber.disconnect();
+ }
+ const sampleNode = (0, utils_1.sample)(this.connectionPool.getNodes());
+ if (!sampleNode) {
+ debug("selecting subscriber failed since there is no node discovered in the cluster yet");
+ this.subscriber = null;
+ return;
+ }
+ const { options } = sampleNode;
+ debug("selected a subscriber %s:%s", options.host, options.port);
+ /*
+ * Create a specialized Redis connection for the subscription.
+ * Note that auto reconnection is enabled here.
+ *
+ * `enableReadyCheck` is also enabled because although subscription is allowed
+ * while redis is loading data from the disk, we can check if the password
+ * provided for the subscriber is correct, and if not, the current subscriber
+ * will be disconnected and a new subscriber will be selected.
+ */
+ let connectionPrefix = "subscriber";
+ if (this.isSharded)
+ connectionPrefix = "ssubscriber";
+ this.subscriber = new Redis_1.default({
+ port: options.port,
+ host: options.host,
+ username: options.username,
+ password: options.password,
+ enableReadyCheck: true,
+ connectionName: (0, util_1.getConnectionName)(connectionPrefix, options.connectionName),
+ lazyConnect: true,
+ tls: options.tls,
+ // Don't try to reconnect the subscriber connection. If the connection fails
+ // we will get an end event (handled below), at which point we'll pick a new
+ // node from the pool and try to connect to that as the subscriber connection.
+ retryStrategy: null,
+ });
+ // Ignore the errors since they're handled in the connection pool.
+ this.subscriber.on("error", utils_1.noop);
+ this.subscriber.on("moved", () => {
+ this.emitter.emit("forceRefresh");
+ });
+ // The node we lost connection to may not come back up in a
+ // reasonable amount of time (e.g. a slave that's taken down
+ // for maintainence), we could potentially miss many published
+ // messages so we should reconnect as quickly as possible, to
+ // a different node if needed.
+ this.subscriber.once("end", this.onSubscriberEnd);
+ // Re-subscribe previous channels
+ const previousChannels = { subscribe: [], psubscribe: [], ssubscribe: [] };
+ if (lastActiveSubscriber) {
+ const condition = lastActiveSubscriber.condition || lastActiveSubscriber.prevCondition;
+ if (condition && condition.subscriber) {
+ previousChannels.subscribe = condition.subscriber.channels("subscribe");
+ previousChannels.psubscribe =
+ condition.subscriber.channels("psubscribe");
+ previousChannels.ssubscribe =
+ condition.subscriber.channels("ssubscribe");
+ }
+ }
+ if (previousChannels.subscribe.length ||
+ previousChannels.psubscribe.length ||
+ previousChannels.ssubscribe.length) {
+ let pending = 0;
+ for (const type of ["subscribe", "psubscribe", "ssubscribe"]) {
+ const channels = previousChannels[type];
+ if (channels.length == 0) {
+ continue;
+ }
+ debug("%s %d channels", type, channels.length);
+ if (type === "ssubscribe") {
+ for (const channel of channels) {
+ pending += 1;
+ this.subscriber[type](channel)
+ .then(() => {
+ if (!--pending) {
+ this.lastActiveSubscriber = this.subscriber;
+ }
+ })
+ .catch(() => {
+ // TODO: should probably disconnect the subscriber and try again.
+ debug("failed to ssubscribe to channel: %s", channel);
+ });
+ }
+ }
+ else {
+ pending += 1;
+ this.subscriber[type](channels)
+ .then(() => {
+ if (!--pending) {
+ this.lastActiveSubscriber = this.subscriber;
+ }
+ })
+ .catch(() => {
+ // TODO: should probably disconnect the subscriber and try again.
+ debug("failed to %s %d channels", type, channels.length);
+ });
+ }
+ }
+ }
+ else {
+ this.lastActiveSubscriber = this.subscriber;
+ }
+ for (const event of [
+ "message",
+ "messageBuffer",
+ ]) {
+ this.subscriber.on(event, (arg1, arg2) => {
+ this.emitter.emit(event, arg1, arg2);
+ });
+ }
+ for (const event of ["pmessage", "pmessageBuffer"]) {
+ this.subscriber.on(event, (arg1, arg2, arg3) => {
+ this.emitter.emit(event, arg1, arg2, arg3);
+ });
+ }
+ if (this.isSharded == true) {
+ for (const event of [
+ "smessage",
+ "smessageBuffer",
+ ]) {
+ this.subscriber.on(event, (arg1, arg2) => {
+ this.emitter.emit(event, arg1, arg2);
+ });
+ }
+ }
+ }
+}
+exports.default = ClusterSubscriber;
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.d.ts b/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.d.ts
new file mode 100644
index 0000000..496b96d
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.d.ts
@@ -0,0 +1,108 @@
+///
+import * as EventEmitter from "events";
+import ShardedSubscriber from "./ShardedSubscriber";
+import { ClusterOptions } from "./ClusterOptions";
+/**
+ * Redis distinguishes between "normal" and sharded PubSub. When using the normal PubSub feature,
+ * exactly one subscriber exists per cluster instance because the Redis cluster bus forwards
+ * messages between shards. Sharded PubSub removes this limitation by making each shard
+ * responsible for its own messages.
+ *
+ * This class coordinates one ShardedSubscriber per master node in the cluster, providing
+ * sharded PubSub support while keeping the public API backward compatible.
+ */
+export default class ClusterSubscriberGroup {
+ private readonly subscriberGroupEmitter;
+ private readonly options;
+ private shardedSubscribers;
+ private clusterSlots;
+ private subscriberToSlotsIndex;
+ private channels;
+ private failedAttemptsByNode;
+ private isResetting;
+ private pendingReset;
+ private static readonly MAX_RETRY_ATTEMPTS;
+ private static readonly MAX_BACKOFF_MS;
+ private static readonly BASE_BACKOFF_MS;
+ /**
+ * Register callbacks
+ *
+ * @param cluster
+ */
+ constructor(subscriberGroupEmitter: EventEmitter, options: ClusterOptions);
+ /**
+ * Get the responsible subscriber.
+ *
+ * @param slot
+ */
+ getResponsibleSubscriber(slot: number): ShardedSubscriber | undefined;
+ /**
+ * Adds a channel for which this subscriber group is responsible
+ *
+ * @param channels
+ */
+ addChannels(channels: (string | Buffer)[]): number;
+ /**
+ * Removes channels for which the subscriber group is responsible by optionally unsubscribing
+ * @param channels
+ */
+ removeChannels(channels: (string | Buffer)[]): number;
+ /**
+ * Disconnect all subscribers and clear some of the internal state.
+ */
+ stop(): void;
+ /**
+ * Start all not yet started subscribers
+ */
+ start(): Promise;
+ /**
+ * Resets the subscriber group by disconnecting all subscribers that are no longer needed and connecting new ones.
+ */
+ reset(clusterSlots: string[][], clusterNodes: any[]): Promise;
+ /**
+ * Refreshes the subscriber-related slot ranges
+ *
+ * Returns false if no refresh was needed
+ *
+ * @param targetSlots
+ */
+ private _refreshSlots;
+ /**
+ * Resubscribes to the previous channels
+ *
+ * @private
+ */
+ private _resubscribe;
+ /**
+ * Deep equality of the cluster slots objects
+ *
+ * @param other
+ * @private
+ */
+ private _slotsAreEqual;
+ /**
+ * Checks if any subscribers are in an unhealthy state.
+ *
+ * A subscriber is considered unhealthy if:
+ * - It exists but is not started (failed/disconnected)
+ * - It's missing entirely for a node that should have one
+ *
+ * @returns true if any subscribers need to be recreated
+ */
+ private hasUnhealthySubscribers;
+ /**
+ * Handles failed subscriber connections by emitting an event to refresh the slots cache
+ * after a backoff period.
+ *
+ * @param error
+ * @param nodeKey
+ */
+ private handleSubscriberConnectFailed;
+ /**
+ * Handles successful subscriber connections by resetting the failed attempts counter.
+ *
+ * @param nodeKey
+ */
+ private handleSubscriberConnectSucceeded;
+ private shouldStartSubscriber;
+}
diff --git a/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.js b/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.js
new file mode 100644
index 0000000..8f524a8
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ClusterSubscriberGroup.js
@@ -0,0 +1,373 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const util_1 = require("./util");
+const calculateSlot = require("cluster-key-slot");
+const ShardedSubscriber_1 = require("./ShardedSubscriber");
+const debug = (0, utils_1.Debug)("cluster:subscriberGroup");
+/**
+ * Redis distinguishes between "normal" and sharded PubSub. When using the normal PubSub feature,
+ * exactly one subscriber exists per cluster instance because the Redis cluster bus forwards
+ * messages between shards. Sharded PubSub removes this limitation by making each shard
+ * responsible for its own messages.
+ *
+ * This class coordinates one ShardedSubscriber per master node in the cluster, providing
+ * sharded PubSub support while keeping the public API backward compatible.
+ */
+class ClusterSubscriberGroup {
+ /**
+ * Register callbacks
+ *
+ * @param cluster
+ */
+ constructor(subscriberGroupEmitter, options) {
+ this.subscriberGroupEmitter = subscriberGroupEmitter;
+ this.options = options;
+ this.shardedSubscribers = new Map();
+ this.clusterSlots = [];
+ // Simple [min, max] slot ranges aren't enough because you can migrate single slots
+ this.subscriberToSlotsIndex = new Map();
+ this.channels = new Map();
+ this.failedAttemptsByNode = new Map();
+ // Only latest pending reset kept; throttled by refreshSlotsCache's isRefreshing + backoff delay
+ this.isResetting = false;
+ this.pendingReset = null;
+ /**
+ * Handles failed subscriber connections by emitting an event to refresh the slots cache
+ * after a backoff period.
+ *
+ * @param error
+ * @param nodeKey
+ */
+ this.handleSubscriberConnectFailed = (error, nodeKey) => {
+ const currentAttempts = this.failedAttemptsByNode.get(nodeKey) || 0;
+ const failedAttempts = currentAttempts + 1;
+ this.failedAttemptsByNode.set(nodeKey, failedAttempts);
+ const attempts = Math.min(failedAttempts, ClusterSubscriberGroup.MAX_RETRY_ATTEMPTS);
+ const backoff = Math.min(ClusterSubscriberGroup.BASE_BACKOFF_MS * 2 ** attempts, ClusterSubscriberGroup.MAX_BACKOFF_MS);
+ const jitter = Math.floor((Math.random() - 0.5) * (backoff * 0.5));
+ const delay = Math.max(0, backoff + jitter);
+ debug("Failed to connect subscriber for %s. Refreshing slots in %dms", nodeKey, delay);
+ this.subscriberGroupEmitter.emit("subscriberConnectFailed", {
+ delay,
+ error,
+ });
+ };
+ /**
+ * Handles successful subscriber connections by resetting the failed attempts counter.
+ *
+ * @param nodeKey
+ */
+ this.handleSubscriberConnectSucceeded = (nodeKey) => {
+ this.failedAttemptsByNode.delete(nodeKey);
+ };
+ }
+ /**
+ * Get the responsible subscriber.
+ *
+ * @param slot
+ */
+ getResponsibleSubscriber(slot) {
+ const nodeKey = this.clusterSlots[slot][0];
+ const sub = this.shardedSubscribers.get(nodeKey);
+ if (sub && sub.subscriberStatus === "idle") {
+ sub
+ .start()
+ .then(() => {
+ this.handleSubscriberConnectSucceeded(sub.getNodeKey());
+ })
+ .catch((err) => {
+ this.handleSubscriberConnectFailed(err, sub.getNodeKey());
+ });
+ }
+ return sub;
+ }
+ /**
+ * Adds a channel for which this subscriber group is responsible
+ *
+ * @param channels
+ */
+ addChannels(channels) {
+ const slot = calculateSlot(channels[0]);
+ // Check if the all channels belong to the same slot and otherwise reject the operation
+ for (const c of channels) {
+ if (calculateSlot(c) !== slot) {
+ return -1;
+ }
+ }
+ const currChannels = this.channels.get(slot);
+ if (!currChannels) {
+ this.channels.set(slot, channels);
+ }
+ else {
+ this.channels.set(slot, currChannels.concat(channels));
+ }
+ return Array.from(this.channels.values()).reduce((sum, array) => sum + array.length, 0);
+ }
+ /**
+ * Removes channels for which the subscriber group is responsible by optionally unsubscribing
+ * @param channels
+ */
+ removeChannels(channels) {
+ const slot = calculateSlot(channels[0]);
+ // Check if the all channels belong to the same slot and otherwise reject the operation
+ for (const c of channels) {
+ if (calculateSlot(c) !== slot) {
+ return -1;
+ }
+ }
+ const slotChannels = this.channels.get(slot);
+ if (slotChannels) {
+ const updatedChannels = slotChannels.filter((c) => !channels.includes(c));
+ this.channels.set(slot, updatedChannels);
+ }
+ return Array.from(this.channels.values()).reduce((sum, array) => sum + array.length, 0);
+ }
+ /**
+ * Disconnect all subscribers and clear some of the internal state.
+ */
+ stop() {
+ for (const s of this.shardedSubscribers.values()) {
+ s.stop();
+ }
+ // Clear subscriber instances and pending operations.
+ // Channels are preserved for resubscription on reconnect.
+ this.pendingReset = null;
+ this.shardedSubscribers.clear();
+ this.subscriberToSlotsIndex.clear();
+ }
+ /**
+ * Start all not yet started subscribers
+ */
+ start() {
+ const startPromises = [];
+ for (const s of this.shardedSubscribers.values()) {
+ if (this.shouldStartSubscriber(s)) {
+ startPromises.push(s
+ .start()
+ .then(() => {
+ this.handleSubscriberConnectSucceeded(s.getNodeKey());
+ })
+ .catch((err) => {
+ this.handleSubscriberConnectFailed(err, s.getNodeKey());
+ }));
+ this.subscriberGroupEmitter.emit("+subscriber");
+ }
+ }
+ return Promise.all(startPromises);
+ }
+ /**
+ * Resets the subscriber group by disconnecting all subscribers that are no longer needed and connecting new ones.
+ */
+ async reset(clusterSlots, clusterNodes) {
+ if (this.isResetting) {
+ this.pendingReset = { slots: clusterSlots, nodes: clusterNodes };
+ return;
+ }
+ this.isResetting = true;
+ try {
+ const hasTopologyChanged = this._refreshSlots(clusterSlots);
+ const hasFailedSubscribers = this.hasUnhealthySubscribers();
+ if (!hasTopologyChanged && !hasFailedSubscribers) {
+ debug("No topology change detected or failed subscribers. Skipping reset.");
+ return;
+ }
+ // For each of the sharded subscribers
+ for (const [nodeKey, shardedSubscriber] of this.shardedSubscribers) {
+ if (
+ // If the subscriber is still responsible for a slot range and is healthy then keep it
+ this.subscriberToSlotsIndex.has(nodeKey) &&
+ shardedSubscriber.isHealthy()) {
+ debug("Skipping deleting subscriber for %s", nodeKey);
+ continue;
+ }
+ debug("Removing subscriber for %s", nodeKey);
+ // Otherwise stop the subscriber and remove it
+ shardedSubscriber.stop();
+ this.shardedSubscribers.delete(nodeKey);
+ this.subscriberGroupEmitter.emit("-subscriber");
+ }
+ const startPromises = [];
+ // For each node in slots cache
+ for (const [nodeKey, _] of this.subscriberToSlotsIndex) {
+ const existingSubscriber = this.shardedSubscribers.get(nodeKey);
+ // If we already have a subscriber for this node, only ensure it is healthy
+ // when it now owns slots with active channel subscriptions.
+ if (existingSubscriber && existingSubscriber.isHealthy()) {
+ debug("Skipping creating new subscriber for %s", nodeKey);
+ if (!existingSubscriber.isStarted() &&
+ this.shouldStartSubscriber(existingSubscriber)) {
+ startPromises.push(existingSubscriber
+ .start()
+ .then(() => {
+ this.handleSubscriberConnectSucceeded(nodeKey);
+ })
+ .catch((error) => {
+ this.handleSubscriberConnectFailed(error, nodeKey);
+ }));
+ }
+ continue;
+ }
+ // If we have an existing subscriber but it is not healthy, stop it
+ if (existingSubscriber && !existingSubscriber.isHealthy()) {
+ debug("Replacing subscriber for %s", nodeKey);
+ existingSubscriber.stop();
+ this.shardedSubscribers.delete(nodeKey);
+ this.subscriberGroupEmitter.emit("-subscriber");
+ }
+ debug("Creating new subscriber for %s", nodeKey);
+ // Otherwise create a new subscriber
+ const redis = clusterNodes.find((node) => {
+ return (0, util_1.getNodeKey)(node.options) === nodeKey;
+ });
+ if (!redis) {
+ debug("Failed to find node for key %s", nodeKey);
+ continue;
+ }
+ const sub = new ShardedSubscriber_1.default(this.subscriberGroupEmitter, redis.options, this.options.redisOptions);
+ this.shardedSubscribers.set(nodeKey, sub);
+ if (this.shouldStartSubscriber(sub)) {
+ startPromises.push(sub
+ .start()
+ .then(() => {
+ this.handleSubscriberConnectSucceeded(nodeKey);
+ })
+ .catch((error) => {
+ this.handleSubscriberConnectFailed(error, nodeKey);
+ }));
+ }
+ this.subscriberGroupEmitter.emit("+subscriber");
+ }
+ // It's vital to await the start promises before resubscribing
+ // Otherwise we might try to resubscribe to a subscriber that is not yet connected
+ // This can cause a race condition
+ await Promise.all(startPromises);
+ this._resubscribe();
+ this.subscriberGroupEmitter.emit("subscribersReady");
+ }
+ finally {
+ this.isResetting = false;
+ if (this.pendingReset) {
+ const { slots, nodes } = this.pendingReset;
+ this.pendingReset = null;
+ await this.reset(slots, nodes);
+ }
+ }
+ }
+ /**
+ * Refreshes the subscriber-related slot ranges
+ *
+ * Returns false if no refresh was needed
+ *
+ * @param targetSlots
+ */
+ _refreshSlots(targetSlots) {
+ //If there was an actual change, then reassign the slot ranges
+ // Also rebuild if subscriberToSlotsIndex is empty (e.g., after stop() was called)
+ if (this._slotsAreEqual(targetSlots) && this.subscriberToSlotsIndex.size > 0) {
+ debug("Nothing to refresh because the new cluster map is equal to the previous one.");
+ return false;
+ }
+ debug("Refreshing the slots of the subscriber group.");
+ //Rebuild the slots index
+ this.subscriberToSlotsIndex = new Map();
+ for (let slot = 0; slot < targetSlots.length; slot++) {
+ const node = targetSlots[slot][0];
+ if (!this.subscriberToSlotsIndex.has(node)) {
+ this.subscriberToSlotsIndex.set(node, []);
+ }
+ this.subscriberToSlotsIndex.get(node).push(Number(slot));
+ }
+ //Update the cached slots map
+ this.clusterSlots = JSON.parse(JSON.stringify(targetSlots));
+ return true;
+ }
+ /**
+ * Resubscribes to the previous channels
+ *
+ * @private
+ */
+ _resubscribe() {
+ if (this.shardedSubscribers) {
+ this.shardedSubscribers.forEach((s, nodeKey) => {
+ const subscriberSlots = this.subscriberToSlotsIndex.get(nodeKey);
+ if (subscriberSlots) {
+ //Resubscribe on the underlying connection
+ subscriberSlots.forEach((ss) => {
+ //Might return null if being disconnected
+ const redis = s.getInstance();
+ const channels = this.channels.get(ss);
+ if (channels && channels.length > 0) {
+ if (!redis || redis.status === "end") {
+ return;
+ }
+ if (redis.status === "ready") {
+ redis.ssubscribe(...channels).catch((err) => {
+ // TODO: Should we emit an error event here?
+ debug("Failed to ssubscribe on node %s: %s", nodeKey, err);
+ });
+ }
+ else {
+ redis.once("ready", () => {
+ redis.ssubscribe(...channels).catch((err) => {
+ // TODO: Should we emit an error event here?
+ debug("Failed to ssubscribe on node %s: %s", nodeKey, err);
+ });
+ });
+ }
+ }
+ });
+ }
+ });
+ }
+ }
+ /**
+ * Deep equality of the cluster slots objects
+ *
+ * @param other
+ * @private
+ */
+ _slotsAreEqual(other) {
+ if (this.clusterSlots === undefined) {
+ return false;
+ }
+ else {
+ return JSON.stringify(this.clusterSlots) === JSON.stringify(other);
+ }
+ }
+ /**
+ * Checks if any subscribers are in an unhealthy state.
+ *
+ * A subscriber is considered unhealthy if:
+ * - It exists but is not started (failed/disconnected)
+ * - It's missing entirely for a node that should have one
+ *
+ * @returns true if any subscribers need to be recreated
+ */
+ hasUnhealthySubscribers() {
+ const hasFailedSubscribers = Array.from(this.shardedSubscribers.values()).some((sub) => !sub.isHealthy());
+ const hasMissingSubscribers = Array.from(this.subscriberToSlotsIndex.keys()).some((nodeKey) => !this.shardedSubscribers.has(nodeKey));
+ return hasFailedSubscribers || hasMissingSubscribers;
+ }
+ shouldStartSubscriber(sub) {
+ if (sub.isStarted()) {
+ return false;
+ }
+ if (!sub.isLazyConnect()) {
+ return true;
+ }
+ const subscriberSlots = this.subscriberToSlotsIndex.get(sub.getNodeKey());
+ if (!subscriberSlots) {
+ return false;
+ }
+ return subscriberSlots.some((slot) => {
+ const channels = this.channels.get(slot);
+ return Boolean(channels && channels.length > 0);
+ });
+ }
+}
+exports.default = ClusterSubscriberGroup;
+// Retry strategy
+ClusterSubscriberGroup.MAX_RETRY_ATTEMPTS = 10;
+ClusterSubscriberGroup.MAX_BACKOFF_MS = 2000;
+ClusterSubscriberGroup.BASE_BACKOFF_MS = 100;
diff --git a/backend/node_modules/ioredis/built/cluster/ConnectionPool.d.ts b/backend/node_modules/ioredis/built/cluster/ConnectionPool.d.ts
new file mode 100644
index 0000000..0de5d7a
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ConnectionPool.d.ts
@@ -0,0 +1,37 @@
+///
+import { EventEmitter } from "events";
+import { RedisOptions, NodeKey, NodeRole } from "./util";
+import Redis from "../Redis";
+export default class ConnectionPool extends EventEmitter {
+ private redisOptions;
+ private nodes;
+ private specifiedOptions;
+ constructor(redisOptions: any);
+ getNodes(role?: NodeRole): Redis[];
+ getInstanceByKey(key: NodeKey): Redis;
+ getSampleInstance(role: NodeRole): Redis;
+ /**
+ * Add a master node to the pool
+ * @param node
+ */
+ addMasterNode(node: RedisOptions): boolean;
+ /**
+ * Creates a Redis connection instance from the node options
+ * @param node
+ * @param readOnly
+ */
+ createRedisFromOptions(node: RedisOptions, readOnly: boolean): Redis;
+ /**
+ * Find or create a connection to the node
+ */
+ findOrCreate(node: RedisOptions, readOnly?: boolean): Redis;
+ /**
+ * Reset the pool with a set of nodes.
+ * The old node will be removed.
+ */
+ reset(nodes: RedisOptions[]): void;
+ /**
+ * Remove a node from the pool.
+ */
+ private removeNode;
+}
diff --git a/backend/node_modules/ioredis/built/cluster/ConnectionPool.js b/backend/node_modules/ioredis/built/cluster/ConnectionPool.js
new file mode 100644
index 0000000..4fef1b8
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ConnectionPool.js
@@ -0,0 +1,154 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const events_1 = require("events");
+const utils_1 = require("../utils");
+const util_1 = require("./util");
+const Redis_1 = require("../Redis");
+const debug = (0, utils_1.Debug)("cluster:connectionPool");
+class ConnectionPool extends events_1.EventEmitter {
+ constructor(redisOptions) {
+ super();
+ this.redisOptions = redisOptions;
+ // master + slave = all
+ this.nodes = {
+ all: {},
+ master: {},
+ slave: {},
+ };
+ this.specifiedOptions = {};
+ }
+ getNodes(role = "all") {
+ const nodes = this.nodes[role];
+ return Object.keys(nodes).map((key) => nodes[key]);
+ }
+ getInstanceByKey(key) {
+ return this.nodes.all[key];
+ }
+ getSampleInstance(role) {
+ const keys = Object.keys(this.nodes[role]);
+ const sampleKey = (0, utils_1.sample)(keys);
+ return this.nodes[role][sampleKey];
+ }
+ /**
+ * Add a master node to the pool
+ * @param node
+ */
+ addMasterNode(node) {
+ const key = (0, util_1.getNodeKey)(node.options);
+ const redis = this.createRedisFromOptions(node, node.options.readOnly);
+ //Master nodes aren't read-only
+ if (!node.options.readOnly) {
+ this.nodes.all[key] = redis;
+ this.nodes.master[key] = redis;
+ return true;
+ }
+ return false;
+ }
+ /**
+ * Creates a Redis connection instance from the node options
+ * @param node
+ * @param readOnly
+ */
+ createRedisFromOptions(node, readOnly) {
+ const redis = new Redis_1.default((0, utils_1.defaults)({
+ // Never try to reconnect when a node is lose,
+ // instead, waiting for a `MOVED` error and
+ // fetch the slots again.
+ retryStrategy: null,
+ // Offline queue should be enabled so that
+ // we don't need to wait for the `ready` event
+ // before sending commands to the node.
+ enableOfflineQueue: true,
+ readOnly: readOnly,
+ }, node, this.redisOptions, { lazyConnect: true }));
+ return redis;
+ }
+ /**
+ * Find or create a connection to the node
+ */
+ findOrCreate(node, readOnly = false) {
+ const key = (0, util_1.getNodeKey)(node);
+ readOnly = Boolean(readOnly);
+ if (this.specifiedOptions[key]) {
+ Object.assign(node, this.specifiedOptions[key]);
+ }
+ else {
+ this.specifiedOptions[key] = node;
+ }
+ let redis;
+ if (this.nodes.all[key]) {
+ redis = this.nodes.all[key];
+ if (redis.options.readOnly !== readOnly) {
+ redis.options.readOnly = readOnly;
+ debug("Change role of %s to %s", key, readOnly ? "slave" : "master");
+ redis[readOnly ? "readonly" : "readwrite"]().catch(utils_1.noop);
+ if (readOnly) {
+ delete this.nodes.master[key];
+ this.nodes.slave[key] = redis;
+ }
+ else {
+ delete this.nodes.slave[key];
+ this.nodes.master[key] = redis;
+ }
+ }
+ }
+ else {
+ debug("Connecting to %s as %s", key, readOnly ? "slave" : "master");
+ redis = this.createRedisFromOptions(node, readOnly);
+ this.nodes.all[key] = redis;
+ this.nodes[readOnly ? "slave" : "master"][key] = redis;
+ redis.once("end", () => {
+ this.removeNode(key);
+ this.emit("-node", redis, key);
+ if (!Object.keys(this.nodes.all).length) {
+ this.emit("drain");
+ }
+ });
+ this.emit("+node", redis, key);
+ redis.on("error", function (error) {
+ this.emit("nodeError", error, key);
+ });
+ }
+ return redis;
+ }
+ /**
+ * Reset the pool with a set of nodes.
+ * The old node will be removed.
+ */
+ reset(nodes) {
+ debug("Reset with %O", nodes);
+ const newNodes = {};
+ nodes.forEach((node) => {
+ const key = (0, util_1.getNodeKey)(node);
+ // Don't override the existing (master) node
+ // when the current one is slave.
+ if (!(node.readOnly && newNodes[key])) {
+ newNodes[key] = node;
+ }
+ });
+ Object.keys(this.nodes.all).forEach((key) => {
+ if (!newNodes[key]) {
+ debug("Disconnect %s because the node does not hold any slot", key);
+ this.nodes.all[key].disconnect();
+ this.removeNode(key);
+ }
+ });
+ Object.keys(newNodes).forEach((key) => {
+ const node = newNodes[key];
+ this.findOrCreate(node, node.readOnly);
+ });
+ }
+ /**
+ * Remove a node from the pool.
+ */
+ removeNode(key) {
+ const { nodes } = this;
+ if (nodes.all[key]) {
+ debug("Remove %s from the pool", key);
+ delete nodes.all[key];
+ }
+ delete nodes.master[key];
+ delete nodes.slave[key];
+ }
+}
+exports.default = ConnectionPool;
diff --git a/backend/node_modules/ioredis/built/cluster/DelayQueue.d.ts b/backend/node_modules/ioredis/built/cluster/DelayQueue.d.ts
new file mode 100644
index 0000000..2d64896
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/DelayQueue.d.ts
@@ -0,0 +1,20 @@
+export interface DelayQueueOptions {
+ callback?: Function;
+ timeout: number;
+}
+/**
+ * Queue that runs items after specified duration
+ */
+export default class DelayQueue {
+ private queues;
+ private timeouts;
+ /**
+ * Add a new item to the queue
+ *
+ * @param bucket bucket name
+ * @param item function that will run later
+ * @param options
+ */
+ push(bucket: string, item: Function, options: DelayQueueOptions): void;
+ private execute;
+}
diff --git a/backend/node_modules/ioredis/built/cluster/DelayQueue.js b/backend/node_modules/ioredis/built/cluster/DelayQueue.js
new file mode 100644
index 0000000..e17df51
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/DelayQueue.js
@@ -0,0 +1,53 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const Deque = require("denque");
+const debug = (0, utils_1.Debug)("delayqueue");
+/**
+ * Queue that runs items after specified duration
+ */
+class DelayQueue {
+ constructor() {
+ this.queues = {};
+ this.timeouts = {};
+ }
+ /**
+ * Add a new item to the queue
+ *
+ * @param bucket bucket name
+ * @param item function that will run later
+ * @param options
+ */
+ push(bucket, item, options) {
+ const callback = options.callback || process.nextTick;
+ if (!this.queues[bucket]) {
+ this.queues[bucket] = new Deque();
+ }
+ const queue = this.queues[bucket];
+ queue.push(item);
+ if (!this.timeouts[bucket]) {
+ this.timeouts[bucket] = setTimeout(() => {
+ callback(() => {
+ this.timeouts[bucket] = null;
+ this.execute(bucket);
+ });
+ }, options.timeout);
+ }
+ }
+ execute(bucket) {
+ const queue = this.queues[bucket];
+ if (!queue) {
+ return;
+ }
+ const { length } = queue;
+ if (!length) {
+ return;
+ }
+ debug("send %d commands in %s queue", length, bucket);
+ this.queues[bucket] = null;
+ while (queue.length > 0) {
+ queue.shift()();
+ }
+ }
+}
+exports.default = DelayQueue;
diff --git a/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.d.ts b/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.d.ts
new file mode 100644
index 0000000..921bcdb
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.d.ts
@@ -0,0 +1,36 @@
+///
+import EventEmitter = require("events");
+import { RedisOptions } from "./util";
+import Redis from "../Redis";
+import { ClusterOptions } from "./ClusterOptions";
+declare const SubscriberStatus: {
+ readonly IDLE: "idle";
+ readonly STARTING: "starting";
+ readonly CONNECTED: "connected";
+ readonly STOPPING: "stopping";
+ readonly ENDED: "ended";
+};
+declare type SubscriberStatus = typeof SubscriberStatus[keyof typeof SubscriberStatus];
+export default class ShardedSubscriber {
+ private readonly emitter;
+ private readonly nodeKey;
+ private status;
+ private instance;
+ private connectPromise;
+ private lazyConnect;
+ private readonly messageListeners;
+ constructor(emitter: EventEmitter, options: RedisOptions, redisOptions?: ClusterOptions["redisOptions"]);
+ start(): Promise;
+ stop(): void;
+ isStarted(): boolean;
+ get subscriberStatus(): SubscriberStatus;
+ isHealthy(): boolean;
+ getInstance(): Redis | null;
+ getNodeKey(): string;
+ isLazyConnect(): boolean;
+ private onEnd;
+ private onError;
+ private onMoved;
+ private updateStatus;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.js b/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.js
new file mode 100644
index 0000000..163fb63
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/ShardedSubscriber.js
@@ -0,0 +1,147 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const util_1 = require("./util");
+const utils_1 = require("../utils");
+const Redis_1 = require("../Redis");
+const debug = (0, utils_1.Debug)("cluster:subscriberGroup:shardedSubscriber");
+const SubscriberStatus = {
+ IDLE: "idle",
+ STARTING: "starting",
+ CONNECTED: "connected",
+ STOPPING: "stopping",
+ ENDED: "ended",
+};
+const ALLOWED_STATUS_UPDATES = {
+ [SubscriberStatus.IDLE]: [
+ SubscriberStatus.STARTING,
+ SubscriberStatus.STOPPING,
+ SubscriberStatus.ENDED,
+ ],
+ [SubscriberStatus.STARTING]: [
+ SubscriberStatus.CONNECTED,
+ SubscriberStatus.STOPPING,
+ SubscriberStatus.ENDED,
+ ],
+ [SubscriberStatus.CONNECTED]: [
+ SubscriberStatus.STOPPING,
+ SubscriberStatus.ENDED,
+ ],
+ [SubscriberStatus.STOPPING]: [SubscriberStatus.ENDED],
+ [SubscriberStatus.ENDED]: [],
+};
+class ShardedSubscriber {
+ constructor(emitter, options, redisOptions) {
+ var _a;
+ this.emitter = emitter;
+ this.status = SubscriberStatus.IDLE;
+ this.instance = null;
+ this.connectPromise = null;
+ // Store listener references for cleanup
+ this.messageListeners = new Map();
+ this.onEnd = () => {
+ this.updateStatus(SubscriberStatus.ENDED);
+ this.emitter.emit("-node", this.instance, this.nodeKey);
+ };
+ this.onError = (error) => {
+ this.emitter.emit("nodeError", error, this.nodeKey);
+ };
+ this.onMoved = () => {
+ this.emitter.emit("moved");
+ };
+ this.instance = new Redis_1.default((0, utils_1.defaults)({
+ enableReadyCheck: false,
+ enableOfflineQueue: true,
+ connectionName: (0, util_1.getConnectionName)("ssubscriber", options.connectionName),
+ /**
+ * Disable auto reconnection for subscribers.
+ * The ClusterSubscriberGroup will handle the reconnection.
+ */
+ retryStrategy: null,
+ lazyConnect: true,
+ }, options, redisOptions));
+ this.lazyConnect = (_a = redisOptions === null || redisOptions === void 0 ? void 0 : redisOptions.lazyConnect) !== null && _a !== void 0 ? _a : true;
+ this.nodeKey = (0, util_1.getNodeKey)(options);
+ // Register listeners
+ this.instance.on("end", this.onEnd);
+ this.instance.on("error", this.onError);
+ this.instance.on("moved", this.onMoved);
+ for (const event of ["smessage", "smessageBuffer"]) {
+ const listener = (...args) => {
+ this.emitter.emit(event, ...args);
+ };
+ this.messageListeners.set(event, listener);
+ this.instance.on(event, listener);
+ }
+ }
+ async start() {
+ if (this.connectPromise) {
+ return this.connectPromise;
+ }
+ if (this.status === SubscriberStatus.STARTING ||
+ this.status === SubscriberStatus.CONNECTED) {
+ return;
+ }
+ if (this.status === SubscriberStatus.ENDED || !this.instance) {
+ throw new Error(`Sharded subscriber ${this.nodeKey} cannot be restarted once ended.`);
+ }
+ this.updateStatus(SubscriberStatus.STARTING);
+ this.connectPromise = this.instance.connect();
+ try {
+ await this.connectPromise;
+ this.updateStatus(SubscriberStatus.CONNECTED);
+ }
+ catch (err) {
+ this.updateStatus(SubscriberStatus.ENDED);
+ throw err;
+ }
+ finally {
+ this.connectPromise = null;
+ }
+ }
+ stop() {
+ this.updateStatus(SubscriberStatus.STOPPING);
+ if (this.instance) {
+ this.instance.disconnect();
+ this.instance.removeAllListeners();
+ this.messageListeners.clear();
+ this.instance = null;
+ }
+ this.updateStatus(SubscriberStatus.ENDED);
+ debug("stopped %s", this.nodeKey);
+ }
+ isStarted() {
+ return [
+ SubscriberStatus.CONNECTED,
+ SubscriberStatus.STARTING,
+ ].includes(this.status);
+ }
+ get subscriberStatus() {
+ return this.status;
+ }
+ isHealthy() {
+ return ((this.status === SubscriberStatus.IDLE ||
+ this.status === SubscriberStatus.CONNECTED ||
+ this.status === SubscriberStatus.STARTING) &&
+ this.instance !== null);
+ }
+ getInstance() {
+ return this.instance;
+ }
+ getNodeKey() {
+ return this.nodeKey;
+ }
+ isLazyConnect() {
+ return this.lazyConnect;
+ }
+ updateStatus(nextStatus) {
+ if (this.status === nextStatus) {
+ return;
+ }
+ if (!ALLOWED_STATUS_UPDATES[this.status].includes(nextStatus)) {
+ debug("Invalid status transition for %s: %s -> %s", this.nodeKey, this.status, nextStatus);
+ return;
+ }
+ this.status = nextStatus;
+ }
+}
+exports.default = ShardedSubscriber;
diff --git a/backend/node_modules/ioredis/built/cluster/index.d.ts b/backend/node_modules/ioredis/built/cluster/index.d.ts
new file mode 100644
index 0000000..3f5e1b4
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/index.d.ts
@@ -0,0 +1,163 @@
+///
+import { EventEmitter } from "events";
+import Command from "../Command";
+import Redis from "../Redis";
+import ScanStream from "../ScanStream";
+import { Transaction } from "../transaction";
+import { Callback, ScanStreamOptions, WriteableStream } from "../types";
+import Commander from "../utils/Commander";
+import { ClusterOptions } from "./ClusterOptions";
+import { NodeKey, NodeRole } from "./util";
+export declare type ClusterNode = string | number | {
+ host?: string | undefined;
+ port?: number | undefined;
+};
+declare type ClusterStatus = "end" | "close" | "wait" | "connecting" | "connect" | "ready" | "reconnecting" | "disconnecting";
+/**
+ * Client for the official Redis Cluster
+ */
+declare class Cluster extends Commander {
+ options: ClusterOptions;
+ slots: NodeKey[][];
+ status: ClusterStatus;
+ /**
+ * @ignore
+ */
+ _groupsIds: {
+ [key: string]: number;
+ };
+ /**
+ * @ignore
+ */
+ _groupsBySlot: number[];
+ /**
+ * @ignore
+ */
+ isCluster: boolean;
+ private startupNodes;
+ private connectionPool;
+ private manuallyClosing;
+ private retryAttempts;
+ private delayQueue;
+ private offlineQueue;
+ private subscriber;
+ private shardedSubscribers;
+ private slotsTimer;
+ private reconnectTimeout;
+ private isRefreshing;
+ private _refreshSlotsCacheCallbacks;
+ private _autoPipelines;
+ private _runningAutoPipelines;
+ private _readyDelayedCallbacks;
+ private subscriberGroupEmitter;
+ /**
+ * Every time Cluster#connect() is called, this value will be
+ * auto-incrementing. The purpose of this value is used for
+ * discarding previous connect attampts when creating a new
+ * connection.
+ */
+ private connectionEpoch;
+ /**
+ * Creates an instance of Cluster.
+ */
+ constructor(startupNodes: ClusterNode[], options?: ClusterOptions);
+ /**
+ * Connect to a cluster
+ */
+ connect(): Promise;
+ /**
+ * Disconnect from every node in the cluster.
+ */
+ disconnect(reconnect?: boolean): void;
+ /**
+ * Quit the cluster gracefully.
+ */
+ quit(callback?: Callback<"OK">): Promise<"OK">;
+ /**
+ * Create a new instance with the same startup nodes and options as the current one.
+ *
+ * @example
+ * ```js
+ * var cluster = new Redis.Cluster([{ host: "127.0.0.1", port: "30001" }]);
+ * var anotherCluster = cluster.duplicate();
+ * ```
+ */
+ duplicate(overrideStartupNodes?: any[], overrideOptions?: {}): Cluster;
+ /**
+ * Get nodes with the specified role
+ */
+ nodes(role?: NodeRole): Redis[];
+ /**
+ * This is needed in order not to install a listener for each auto pipeline
+ *
+ * @ignore
+ */
+ delayUntilReady(callback: Callback): void;
+ /**
+ * Get the number of commands queued in automatic pipelines.
+ *
+ * This is not available (and returns 0) until the cluster is connected and slots information have been received.
+ */
+ get autoPipelineQueueSize(): number;
+ /**
+ * Refresh the slot cache
+ *
+ * @ignore
+ */
+ refreshSlotsCache(callback?: Callback): void;
+ /**
+ * @ignore
+ */
+ sendCommand(command: Command, stream?: WriteableStream, node?: any): unknown;
+ sscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ sscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ hscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ hscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ zscanStream(key: string, options?: ScanStreamOptions): ScanStream;
+ zscanBufferStream(key: string, options?: ScanStreamOptions): ScanStream;
+ /**
+ * @ignore
+ */
+ handleError(error: Error, ttl: {
+ value?: any;
+ }, handlers: any): void;
+ private resetOfflineQueue;
+ private clearNodesRefreshInterval;
+ private resetNodesRefreshInterval;
+ /**
+ * Change cluster instance's status
+ */
+ private setStatus;
+ /**
+ * Called when closed to check whether a reconnection should be made
+ */
+ private handleCloseEvent;
+ /**
+ * Flush offline queue with error.
+ */
+ private flushQueue;
+ private executeOfflineCommands;
+ private natMapper;
+ private getInfoFromNode;
+ private invokeReadyDelayedCallbacks;
+ /**
+ * Check whether Cluster is able to process commands
+ */
+ private readyCheck;
+ private resolveSrv;
+ private dnsLookup;
+ /**
+ * Normalize startup nodes, and resolving hostnames to IPs.
+ *
+ * This process happens every time when #connect() is called since
+ * #startupNodes and DNS records may chanage.
+ */
+ private resolveStartupNodeHostnames;
+ private createScanStream;
+ private createShardedSubscriberGroup;
+}
+interface Cluster extends EventEmitter {
+}
+interface Cluster extends Transaction {
+}
+export default Cluster;
diff --git a/backend/node_modules/ioredis/built/cluster/index.js b/backend/node_modules/ioredis/built/cluster/index.js
new file mode 100644
index 0000000..1c8d57b
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/index.js
@@ -0,0 +1,937 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const commands_1 = require("@ioredis/commands");
+const events_1 = require("events");
+const redis_errors_1 = require("redis-errors");
+const standard_as_callback_1 = require("standard-as-callback");
+const Command_1 = require("../Command");
+const ClusterAllFailedError_1 = require("../errors/ClusterAllFailedError");
+const Redis_1 = require("../Redis");
+const ScanStream_1 = require("../ScanStream");
+const transaction_1 = require("../transaction");
+const utils_1 = require("../utils");
+const applyMixin_1 = require("../utils/applyMixin");
+const Commander_1 = require("../utils/Commander");
+const ClusterOptions_1 = require("./ClusterOptions");
+const ClusterSubscriber_1 = require("./ClusterSubscriber");
+const ConnectionPool_1 = require("./ConnectionPool");
+const DelayQueue_1 = require("./DelayQueue");
+const util_1 = require("./util");
+const Deque = require("denque");
+const ClusterSubscriberGroup_1 = require("./ClusterSubscriberGroup");
+const debug = (0, utils_1.Debug)("cluster");
+const REJECT_OVERWRITTEN_COMMANDS = new WeakSet();
+/**
+ * Client for the official Redis Cluster
+ */
+class Cluster extends Commander_1.default {
+ /**
+ * Creates an instance of Cluster.
+ */
+ //TODO: Add an option that enables or disables sharded PubSub
+ constructor(startupNodes, options = {}) {
+ super();
+ this.slots = [];
+ /**
+ * @ignore
+ */
+ this._groupsIds = {};
+ /**
+ * @ignore
+ */
+ this._groupsBySlot = Array(16384);
+ /**
+ * @ignore
+ */
+ this.isCluster = true;
+ this.retryAttempts = 0;
+ this.delayQueue = new DelayQueue_1.default();
+ this.offlineQueue = new Deque();
+ this.isRefreshing = false;
+ this._refreshSlotsCacheCallbacks = [];
+ this._autoPipelines = new Map();
+ this._runningAutoPipelines = new Set();
+ this._readyDelayedCallbacks = [];
+ /**
+ * Every time Cluster#connect() is called, this value will be
+ * auto-incrementing. The purpose of this value is used for
+ * discarding previous connect attampts when creating a new
+ * connection.
+ */
+ this.connectionEpoch = 0;
+ events_1.EventEmitter.call(this);
+ this.startupNodes = startupNodes;
+ this.options = (0, utils_1.defaults)({}, options, ClusterOptions_1.DEFAULT_CLUSTER_OPTIONS, this.options);
+ if (this.options.shardedSubscribers) {
+ this.createShardedSubscriberGroup();
+ }
+ if (this.options.redisOptions &&
+ this.options.redisOptions.keyPrefix &&
+ !this.options.keyPrefix) {
+ this.options.keyPrefix = this.options.redisOptions.keyPrefix;
+ }
+ // validate options
+ if (typeof this.options.scaleReads !== "function" &&
+ ["all", "master", "slave"].indexOf(this.options.scaleReads) === -1) {
+ throw new Error('Invalid option scaleReads "' +
+ this.options.scaleReads +
+ '". Expected "all", "master", "slave" or a custom function');
+ }
+ this.connectionPool = new ConnectionPool_1.default(this.options.redisOptions);
+ this.connectionPool.on("-node", (redis, key) => {
+ this.emit("-node", redis);
+ });
+ this.connectionPool.on("+node", (redis) => {
+ this.emit("+node", redis);
+ });
+ this.connectionPool.on("drain", () => {
+ this.setStatus("close");
+ });
+ this.connectionPool.on("nodeError", (error, key) => {
+ this.emit("node error", error, key);
+ });
+ this.subscriber = new ClusterSubscriber_1.default(this.connectionPool, this);
+ if (this.options.scripts) {
+ Object.entries(this.options.scripts).forEach(([name, definition]) => {
+ this.defineCommand(name, definition);
+ });
+ }
+ if (this.options.lazyConnect) {
+ this.setStatus("wait");
+ }
+ else {
+ this.connect().catch((err) => {
+ debug("connecting failed: %s", err);
+ });
+ }
+ }
+ /**
+ * Connect to a cluster
+ */
+ connect() {
+ return new Promise((resolve, reject) => {
+ if (this.status === "connecting" ||
+ this.status === "connect" ||
+ this.status === "ready") {
+ reject(new Error("Redis is already connecting/connected"));
+ return;
+ }
+ const epoch = ++this.connectionEpoch;
+ this.setStatus("connecting");
+ this.resolveStartupNodeHostnames()
+ .then((nodes) => {
+ if (this.connectionEpoch !== epoch) {
+ debug("discard connecting after resolving startup nodes because epoch not match: %d != %d", epoch, this.connectionEpoch);
+ reject(new redis_errors_1.RedisError("Connection is discarded because a new connection is made"));
+ return;
+ }
+ if (this.status !== "connecting") {
+ debug("discard connecting after resolving startup nodes because the status changed to %s", this.status);
+ reject(new redis_errors_1.RedisError("Connection is aborted"));
+ return;
+ }
+ this.connectionPool.reset(nodes);
+ if (this.options.shardedSubscribers) {
+ this.shardedSubscribers
+ .reset(this.slots, this.connectionPool.getNodes("all"))
+ .catch((err) => {
+ // TODO should we emit an error event here?
+ debug("Error while starting subscribers: %s", err);
+ });
+ }
+ const readyHandler = () => {
+ this.setStatus("ready");
+ this.retryAttempts = 0;
+ this.executeOfflineCommands();
+ this.resetNodesRefreshInterval();
+ resolve();
+ };
+ let closeListener = undefined;
+ const refreshListener = () => {
+ this.invokeReadyDelayedCallbacks(undefined);
+ this.removeListener("close", closeListener);
+ this.manuallyClosing = false;
+ this.setStatus("connect");
+ if (this.options.enableReadyCheck) {
+ this.readyCheck((err, fail) => {
+ if (err || fail) {
+ debug("Ready check failed (%s). Reconnecting...", err || fail);
+ if (this.status === "connect") {
+ this.disconnect(true);
+ }
+ }
+ else {
+ readyHandler();
+ }
+ });
+ }
+ else {
+ readyHandler();
+ }
+ };
+ closeListener = () => {
+ const error = new Error("None of startup nodes is available");
+ this.removeListener("refresh", refreshListener);
+ this.invokeReadyDelayedCallbacks(error);
+ reject(error);
+ };
+ this.once("refresh", refreshListener);
+ this.once("close", closeListener);
+ this.once("close", this.handleCloseEvent.bind(this));
+ this.refreshSlotsCache((err) => {
+ if (err && err.message === ClusterAllFailedError_1.default.defaultMessage) {
+ Redis_1.default.prototype.silentEmit.call(this, "error", err);
+ this.connectionPool.reset([]);
+ }
+ });
+ this.subscriber.start();
+ if (this.options.shardedSubscribers) {
+ this.shardedSubscribers.start().catch((err) => {
+ // TODO should we emit an error event here?
+ debug("Error while starting subscribers: %s", err);
+ });
+ }
+ })
+ .catch((err) => {
+ this.setStatus("close");
+ this.handleCloseEvent(err);
+ this.invokeReadyDelayedCallbacks(err);
+ reject(err);
+ });
+ });
+ }
+ /**
+ * Disconnect from every node in the cluster.
+ */
+ disconnect(reconnect = false) {
+ const status = this.status;
+ this.setStatus("disconnecting");
+ if (!reconnect) {
+ this.manuallyClosing = true;
+ }
+ if (this.reconnectTimeout && !reconnect) {
+ clearTimeout(this.reconnectTimeout);
+ this.reconnectTimeout = null;
+ debug("Canceled reconnecting attempts");
+ }
+ this.clearNodesRefreshInterval();
+ this.subscriber.stop();
+ if (this.options.shardedSubscribers) {
+ this.shardedSubscribers.stop();
+ }
+ if (status === "wait") {
+ this.setStatus("close");
+ this.handleCloseEvent();
+ }
+ else {
+ this.connectionPool.reset([]);
+ }
+ }
+ /**
+ * Quit the cluster gracefully.
+ */
+ quit(callback) {
+ const status = this.status;
+ this.setStatus("disconnecting");
+ this.manuallyClosing = true;
+ if (this.reconnectTimeout) {
+ clearTimeout(this.reconnectTimeout);
+ this.reconnectTimeout = null;
+ }
+ this.clearNodesRefreshInterval();
+ this.subscriber.stop();
+ if (this.options.shardedSubscribers) {
+ this.shardedSubscribers.stop();
+ }
+ if (status === "wait") {
+ const ret = (0, standard_as_callback_1.default)(Promise.resolve("OK"), callback);
+ // use setImmediate to make sure "close" event
+ // being emitted after quit() is returned
+ setImmediate(function () {
+ this.setStatus("close");
+ this.handleCloseEvent();
+ }.bind(this));
+ return ret;
+ }
+ return (0, standard_as_callback_1.default)(Promise.all(this.nodes().map((node) => node.quit().catch((err) => {
+ // Ignore the error caused by disconnecting since
+ // we're disconnecting...
+ if (err.message === utils_1.CONNECTION_CLOSED_ERROR_MSG) {
+ return "OK";
+ }
+ throw err;
+ }))).then(() => "OK"), callback);
+ }
+ /**
+ * Create a new instance with the same startup nodes and options as the current one.
+ *
+ * @example
+ * ```js
+ * var cluster = new Redis.Cluster([{ host: "127.0.0.1", port: "30001" }]);
+ * var anotherCluster = cluster.duplicate();
+ * ```
+ */
+ duplicate(overrideStartupNodes = [], overrideOptions = {}) {
+ const startupNodes = overrideStartupNodes.length > 0
+ ? overrideStartupNodes
+ : this.startupNodes.slice(0);
+ const options = Object.assign({}, this.options, overrideOptions);
+ return new Cluster(startupNodes, options);
+ }
+ /**
+ * Get nodes with the specified role
+ */
+ nodes(role = "all") {
+ if (role !== "all" && role !== "master" && role !== "slave") {
+ throw new Error('Invalid role "' + role + '". Expected "all", "master" or "slave"');
+ }
+ return this.connectionPool.getNodes(role);
+ }
+ /**
+ * This is needed in order not to install a listener for each auto pipeline
+ *
+ * @ignore
+ */
+ delayUntilReady(callback) {
+ this._readyDelayedCallbacks.push(callback);
+ }
+ /**
+ * Get the number of commands queued in automatic pipelines.
+ *
+ * This is not available (and returns 0) until the cluster is connected and slots information have been received.
+ */
+ get autoPipelineQueueSize() {
+ let queued = 0;
+ for (const pipeline of this._autoPipelines.values()) {
+ queued += pipeline.length;
+ }
+ return queued;
+ }
+ /**
+ * Refresh the slot cache
+ *
+ * @ignore
+ */
+ refreshSlotsCache(callback) {
+ if (callback) {
+ this._refreshSlotsCacheCallbacks.push(callback);
+ }
+ if (this.isRefreshing) {
+ return;
+ }
+ this.isRefreshing = true;
+ const _this = this;
+ const wrapper = (error) => {
+ this.isRefreshing = false;
+ for (const callback of this._refreshSlotsCacheCallbacks) {
+ callback(error);
+ }
+ this._refreshSlotsCacheCallbacks = [];
+ };
+ const nodes = (0, utils_1.shuffle)(this.connectionPool.getNodes());
+ let lastNodeError = null;
+ function tryNode(index) {
+ if (index === nodes.length) {
+ const error = new ClusterAllFailedError_1.default(ClusterAllFailedError_1.default.defaultMessage, lastNodeError);
+ return wrapper(error);
+ }
+ const node = nodes[index];
+ const key = `${node.options.host}:${node.options.port}`;
+ debug("getting slot cache from %s", key);
+ _this.getInfoFromNode(node, function (err) {
+ switch (_this.status) {
+ case "close":
+ case "end":
+ return wrapper(new Error("Cluster is disconnected."));
+ case "disconnecting":
+ return wrapper(new Error("Cluster is disconnecting."));
+ }
+ if (err) {
+ _this.emit("node error", err, key);
+ lastNodeError = err;
+ tryNode(index + 1);
+ }
+ else {
+ _this.emit("refresh");
+ wrapper();
+ }
+ });
+ }
+ tryNode(0);
+ }
+ /**
+ * @ignore
+ */
+ sendCommand(command, stream, node) {
+ if (this.status === "wait") {
+ this.connect().catch(utils_1.noop);
+ }
+ if (this.status === "end") {
+ command.reject(new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG));
+ return command.promise;
+ }
+ let to = this.options.scaleReads;
+ if (to !== "master") {
+ const isCommandReadOnly = command.isReadOnly ||
+ ((0, commands_1.exists)(command.name) && (0, commands_1.hasFlag)(command.name, "readonly"));
+ if (!isCommandReadOnly) {
+ to = "master";
+ }
+ }
+ let targetSlot = node ? node.slot : command.getSlot();
+ const ttl = {};
+ const _this = this;
+ if (!node && !REJECT_OVERWRITTEN_COMMANDS.has(command)) {
+ REJECT_OVERWRITTEN_COMMANDS.add(command);
+ const reject = command.reject;
+ command.reject = function (err) {
+ const partialTry = tryConnection.bind(null, true);
+ _this.handleError(err, ttl, {
+ moved: function (slot, key) {
+ debug("command %s is moved to %s", command.name, key);
+ targetSlot = Number(slot);
+ if (_this.slots[slot]) {
+ _this.slots[slot][0] = key;
+ }
+ else {
+ _this.slots[slot] = [key];
+ }
+ _this._groupsBySlot[slot] =
+ _this._groupsIds[_this.slots[slot].join(";")];
+ _this.connectionPool.findOrCreate(_this.natMapper(key));
+ tryConnection();
+ debug("refreshing slot caches... (triggered by MOVED error)");
+ _this.refreshSlotsCache();
+ },
+ ask: function (slot, key) {
+ debug("command %s is required to ask %s:%s", command.name, key);
+ const mapped = _this.natMapper(key);
+ _this.connectionPool.findOrCreate(mapped);
+ tryConnection(false, `${mapped.host}:${mapped.port}`);
+ },
+ tryagain: partialTry,
+ clusterDown: partialTry,
+ connectionClosed: partialTry,
+ maxRedirections: function (redirectionError) {
+ reject.call(command, redirectionError);
+ },
+ defaults: function () {
+ reject.call(command, err);
+ },
+ });
+ };
+ }
+ tryConnection();
+ function tryConnection(random, asking) {
+ if (_this.status === "end") {
+ command.reject(new redis_errors_1.AbortError("Cluster is ended."));
+ return;
+ }
+ let redis;
+ if (_this.status === "ready" || command.name === "cluster") {
+ if (node && node.redis) {
+ redis = node.redis;
+ }
+ else if (Command_1.default.checkFlag("ENTER_SUBSCRIBER_MODE", command.name) ||
+ Command_1.default.checkFlag("EXIT_SUBSCRIBER_MODE", command.name)) {
+ if (_this.options.shardedSubscribers &&
+ (command.name == "ssubscribe" || command.name == "sunsubscribe")) {
+ const sub = _this.shardedSubscribers.getResponsibleSubscriber(targetSlot);
+ if (!sub) {
+ command.reject(new redis_errors_1.AbortError(`No sharded subscriber for slot: ${targetSlot}`));
+ return;
+ }
+ let status = -1;
+ if (command.name == "ssubscribe") {
+ status = _this.shardedSubscribers.addChannels(command.getKeys());
+ }
+ if (command.name == "sunsubscribe") {
+ status = _this.shardedSubscribers.removeChannels(command.getKeys());
+ }
+ if (status !== -1) {
+ redis = sub.getInstance();
+ }
+ else {
+ command.reject(new redis_errors_1.AbortError("Possible CROSSSLOT error: All channels must hash to the same slot"));
+ }
+ }
+ else {
+ redis = _this.subscriber.getInstance();
+ }
+ if (!redis) {
+ command.reject(new redis_errors_1.AbortError("No subscriber for the cluster"));
+ return;
+ }
+ }
+ else {
+ if (!random) {
+ if (typeof targetSlot === "number" && _this.slots[targetSlot]) {
+ const nodeKeys = _this.slots[targetSlot];
+ if (typeof to === "function") {
+ const nodes = nodeKeys.map(function (key) {
+ return _this.connectionPool.getInstanceByKey(key);
+ });
+ redis = to(nodes, command);
+ if (Array.isArray(redis)) {
+ redis = (0, utils_1.sample)(redis);
+ }
+ if (!redis) {
+ redis = nodes[0];
+ }
+ }
+ else {
+ let key;
+ if (to === "all") {
+ key = (0, utils_1.sample)(nodeKeys);
+ }
+ else if (to === "slave" && nodeKeys.length > 1) {
+ key = (0, utils_1.sample)(nodeKeys, 1);
+ }
+ else {
+ key = nodeKeys[0];
+ }
+ redis = _this.connectionPool.getInstanceByKey(key);
+ }
+ }
+ if (asking) {
+ redis = _this.connectionPool.getInstanceByKey(asking);
+ redis.asking();
+ }
+ }
+ if (!redis) {
+ redis =
+ (typeof to === "function"
+ ? null
+ : _this.connectionPool.getSampleInstance(to)) ||
+ _this.connectionPool.getSampleInstance("all");
+ }
+ }
+ if (node && !node.redis) {
+ node.redis = redis;
+ }
+ }
+ if (redis) {
+ redis.sendCommand(command, stream);
+ }
+ else if (_this.options.enableOfflineQueue) {
+ _this.offlineQueue.push({
+ command: command,
+ stream: stream,
+ node: node,
+ });
+ }
+ else {
+ command.reject(new Error("Cluster isn't ready and enableOfflineQueue options is false"));
+ }
+ }
+ return command.promise;
+ }
+ sscanStream(key, options) {
+ return this.createScanStream("sscan", { key, options });
+ }
+ sscanBufferStream(key, options) {
+ return this.createScanStream("sscanBuffer", { key, options });
+ }
+ hscanStream(key, options) {
+ return this.createScanStream("hscan", { key, options });
+ }
+ hscanBufferStream(key, options) {
+ return this.createScanStream("hscanBuffer", { key, options });
+ }
+ zscanStream(key, options) {
+ return this.createScanStream("zscan", { key, options });
+ }
+ zscanBufferStream(key, options) {
+ return this.createScanStream("zscanBuffer", { key, options });
+ }
+ /**
+ * @ignore
+ */
+ handleError(error, ttl, handlers) {
+ if (typeof ttl.value === "undefined") {
+ ttl.value = this.options.maxRedirections;
+ }
+ else {
+ ttl.value -= 1;
+ }
+ if (ttl.value <= 0) {
+ handlers.maxRedirections(new Error("Too many Cluster redirections. Last error: " + error));
+ return;
+ }
+ const errv = error.message.split(" ");
+ if (errv[0] === "MOVED") {
+ const timeout = this.options.retryDelayOnMoved;
+ if (timeout && typeof timeout === "number") {
+ this.delayQueue.push("moved", handlers.moved.bind(null, errv[1], errv[2]), { timeout });
+ }
+ else {
+ handlers.moved(errv[1], errv[2]);
+ }
+ }
+ else if (errv[0] === "ASK") {
+ handlers.ask(errv[1], errv[2]);
+ }
+ else if (errv[0] === "TRYAGAIN") {
+ this.delayQueue.push("tryagain", handlers.tryagain, {
+ timeout: this.options.retryDelayOnTryAgain,
+ });
+ }
+ else if (errv[0] === "CLUSTERDOWN" &&
+ this.options.retryDelayOnClusterDown > 0) {
+ this.delayQueue.push("clusterdown", handlers.connectionClosed, {
+ timeout: this.options.retryDelayOnClusterDown,
+ callback: this.refreshSlotsCache.bind(this),
+ });
+ }
+ else if (error.message === utils_1.CONNECTION_CLOSED_ERROR_MSG &&
+ this.options.retryDelayOnFailover > 0 &&
+ this.status === "ready") {
+ this.delayQueue.push("failover", handlers.connectionClosed, {
+ timeout: this.options.retryDelayOnFailover,
+ callback: this.refreshSlotsCache.bind(this),
+ });
+ }
+ else {
+ handlers.defaults();
+ }
+ }
+ resetOfflineQueue() {
+ this.offlineQueue = new Deque();
+ }
+ clearNodesRefreshInterval() {
+ if (this.slotsTimer) {
+ clearTimeout(this.slotsTimer);
+ this.slotsTimer = null;
+ }
+ }
+ resetNodesRefreshInterval() {
+ if (this.slotsTimer || !this.options.slotsRefreshInterval) {
+ return;
+ }
+ const nextRound = () => {
+ this.slotsTimer = setTimeout(() => {
+ debug('refreshing slot caches... (triggered by "slotsRefreshInterval" option)');
+ this.refreshSlotsCache(() => {
+ nextRound();
+ });
+ }, this.options.slotsRefreshInterval);
+ };
+ nextRound();
+ }
+ /**
+ * Change cluster instance's status
+ */
+ setStatus(status) {
+ debug("status: %s -> %s", this.status || "[empty]", status);
+ this.status = status;
+ process.nextTick(() => {
+ this.emit(status);
+ });
+ }
+ /**
+ * Called when closed to check whether a reconnection should be made
+ */
+ handleCloseEvent(reason) {
+ var _a;
+ if (reason) {
+ debug("closed because %s", reason);
+ }
+ let retryDelay;
+ if (!this.manuallyClosing &&
+ typeof this.options.clusterRetryStrategy === "function") {
+ retryDelay = this.options.clusterRetryStrategy.call(this, ++this.retryAttempts, reason);
+ }
+ if (typeof retryDelay === "number") {
+ this.setStatus("reconnecting");
+ this.reconnectTimeout = setTimeout(() => {
+ this.reconnectTimeout = null;
+ debug("Cluster is disconnected. Retrying after %dms", retryDelay);
+ this.connect().catch(function (err) {
+ debug("Got error %s when reconnecting. Ignoring...", err);
+ });
+ }, retryDelay);
+ }
+ else {
+ if (this.options.shardedSubscribers) {
+ (_a = this.subscriberGroupEmitter) === null || _a === void 0 ? void 0 : _a.removeAllListeners();
+ }
+ this.setStatus("end");
+ this.flushQueue(new Error("None of startup nodes is available"));
+ }
+ }
+ /**
+ * Flush offline queue with error.
+ */
+ flushQueue(error) {
+ let item;
+ while ((item = this.offlineQueue.shift())) {
+ item.command.reject(error);
+ }
+ }
+ executeOfflineCommands() {
+ if (this.offlineQueue.length) {
+ debug("send %d commands in offline queue", this.offlineQueue.length);
+ const offlineQueue = this.offlineQueue;
+ this.resetOfflineQueue();
+ let item;
+ while ((item = offlineQueue.shift())) {
+ this.sendCommand(item.command, item.stream, item.node);
+ }
+ }
+ }
+ natMapper(nodeKey) {
+ const key = typeof nodeKey === "string"
+ ? nodeKey
+ : `${nodeKey.host}:${nodeKey.port}`;
+ let mapped = null;
+ if (this.options.natMap && typeof this.options.natMap === "function") {
+ mapped = this.options.natMap(key);
+ }
+ else if (this.options.natMap && typeof this.options.natMap === "object") {
+ mapped = this.options.natMap[key];
+ }
+ if (mapped) {
+ debug("NAT mapping %s -> %O", key, mapped);
+ return Object.assign({}, mapped);
+ }
+ return typeof nodeKey === "string"
+ ? (0, util_1.nodeKeyToRedisOptions)(nodeKey)
+ : nodeKey;
+ }
+ getInfoFromNode(redis, callback) {
+ if (!redis) {
+ return callback(new Error("Node is disconnected"));
+ }
+ // Use a duplication of the connection to avoid
+ // timeouts when the connection is in the blocking
+ // mode (e.g. waiting for BLPOP).
+ const duplicatedConnection = redis.duplicate({
+ enableOfflineQueue: true,
+ enableReadyCheck: false,
+ retryStrategy: null,
+ connectionName: (0, util_1.getConnectionName)("refresher", this.options.redisOptions && this.options.redisOptions.connectionName),
+ });
+ // Ignore error events since we will handle
+ // exceptions for the CLUSTER SLOTS command.
+ duplicatedConnection.on("error", utils_1.noop);
+ duplicatedConnection.cluster("SLOTS", (0, utils_1.timeout)((err, result) => {
+ duplicatedConnection.disconnect();
+ if (err) {
+ debug("error encountered running CLUSTER.SLOTS: %s", err);
+ return callback(err);
+ }
+ if (this.status === "disconnecting" ||
+ this.status === "close" ||
+ this.status === "end") {
+ debug("ignore CLUSTER.SLOTS results (count: %d) since cluster status is %s", result.length, this.status);
+ callback();
+ return;
+ }
+ const nodes = [];
+ debug("cluster slots result count: %d", result.length);
+ for (let i = 0; i < result.length; ++i) {
+ const items = result[i];
+ const slotRangeStart = items[0];
+ const slotRangeEnd = items[1];
+ const keys = [];
+ for (let j = 2; j < items.length; j++) {
+ if (!items[j][0]) {
+ continue;
+ }
+ const node = this.natMapper({
+ host: items[j][0],
+ port: items[j][1],
+ });
+ node.readOnly = j !== 2;
+ nodes.push(node);
+ keys.push(node.host + ":" + node.port);
+ }
+ debug("cluster slots result [%d]: slots %d~%d served by %s", i, slotRangeStart, slotRangeEnd, keys);
+ for (let slot = slotRangeStart; slot <= slotRangeEnd; slot++) {
+ this.slots[slot] = keys;
+ }
+ }
+ // Assign to each node keys a numeric value to make autopipeline comparison faster.
+ this._groupsIds = Object.create(null);
+ let j = 0;
+ for (let i = 0; i < 16384; i++) {
+ const target = (this.slots[i] || []).join(";");
+ if (!target.length) {
+ this._groupsBySlot[i] = undefined;
+ continue;
+ }
+ if (!this._groupsIds[target]) {
+ this._groupsIds[target] = ++j;
+ }
+ this._groupsBySlot[i] = this._groupsIds[target];
+ }
+ this.connectionPool.reset(nodes);
+ if (this.options.shardedSubscribers) {
+ this.shardedSubscribers
+ .reset(this.slots, this.connectionPool.getNodes("all"))
+ .catch((err) => {
+ // TODO should we emit an error event here?
+ debug("Error while starting subscribers: %s", err);
+ });
+ }
+ callback();
+ }, this.options.slotsRefreshTimeout));
+ }
+ invokeReadyDelayedCallbacks(err) {
+ for (const c of this._readyDelayedCallbacks) {
+ process.nextTick(c, err);
+ }
+ this._readyDelayedCallbacks = [];
+ }
+ /**
+ * Check whether Cluster is able to process commands
+ */
+ readyCheck(callback) {
+ this.cluster("INFO", (err, res) => {
+ if (err) {
+ return callback(err);
+ }
+ if (typeof res !== "string") {
+ return callback();
+ }
+ let state;
+ const lines = res.split("\r\n");
+ for (let i = 0; i < lines.length; ++i) {
+ const parts = lines[i].split(":");
+ if (parts[0] === "cluster_state") {
+ state = parts[1];
+ break;
+ }
+ }
+ if (state === "fail") {
+ debug("cluster state not ok (%s)", state);
+ callback(null, state);
+ }
+ else {
+ callback();
+ }
+ });
+ }
+ resolveSrv(hostname) {
+ return new Promise((resolve, reject) => {
+ this.options.resolveSrv(hostname, (err, records) => {
+ if (err) {
+ return reject(err);
+ }
+ const self = this, groupedRecords = (0, util_1.groupSrvRecords)(records), sortedKeys = Object.keys(groupedRecords).sort((a, b) => parseInt(a) - parseInt(b));
+ function tryFirstOne(err) {
+ if (!sortedKeys.length) {
+ return reject(err);
+ }
+ const key = sortedKeys[0], group = groupedRecords[key], record = (0, util_1.weightSrvRecords)(group);
+ if (!group.records.length) {
+ sortedKeys.shift();
+ }
+ self.dnsLookup(record.name).then((host) => resolve({
+ host,
+ port: record.port,
+ }), tryFirstOne);
+ }
+ tryFirstOne();
+ });
+ });
+ }
+ dnsLookup(hostname) {
+ return new Promise((resolve, reject) => {
+ this.options.dnsLookup(hostname, (err, address) => {
+ if (err) {
+ debug("failed to resolve hostname %s to IP: %s", hostname, err.message);
+ reject(err);
+ }
+ else {
+ debug("resolved hostname %s to IP %s", hostname, address);
+ resolve(address);
+ }
+ });
+ });
+ }
+ /**
+ * Normalize startup nodes, and resolving hostnames to IPs.
+ *
+ * This process happens every time when #connect() is called since
+ * #startupNodes and DNS records may chanage.
+ */
+ async resolveStartupNodeHostnames() {
+ if (!Array.isArray(this.startupNodes) || this.startupNodes.length === 0) {
+ throw new Error("`startupNodes` should contain at least one node.");
+ }
+ const startupNodes = (0, util_1.normalizeNodeOptions)(this.startupNodes);
+ const hostnames = (0, util_1.getUniqueHostnamesFromOptions)(startupNodes);
+ if (hostnames.length === 0) {
+ return startupNodes;
+ }
+ const configs = await Promise.all(hostnames.map((this.options.useSRVRecords ? this.resolveSrv : this.dnsLookup).bind(this)));
+ const hostnameToConfig = (0, utils_1.zipMap)(hostnames, configs);
+ return startupNodes.map((node) => {
+ const config = hostnameToConfig.get(node.host);
+ if (!config) {
+ return node;
+ }
+ if (this.options.useSRVRecords) {
+ return Object.assign({}, node, config);
+ }
+ return Object.assign({}, node, { host: config });
+ });
+ }
+ createScanStream(command, { key, options = {} }) {
+ return new ScanStream_1.default({
+ objectMode: true,
+ key: key,
+ redis: this,
+ command: command,
+ ...options,
+ });
+ }
+ createShardedSubscriberGroup() {
+ this.subscriberGroupEmitter = new events_1.EventEmitter();
+ this.shardedSubscribers = new ClusterSubscriberGroup_1.default(this.subscriberGroupEmitter, this.options);
+ // Error handler used only for sharded-subscriber-triggered slots cache refreshes.
+ // Normal (non-subscriber) connections are created with lazyConnect: true and can
+ // become zombied. For sharded subscribers, a ClusterAllFailedError means
+ // we have lost all nodes from the subscriber perspective and must tear down.
+ const refreshSlotsCacheCallback = (err) => {
+ // Disconnect only when refreshing the slots cache fails with ClusterAllFailedError
+ if (err instanceof ClusterAllFailedError_1.default) {
+ this.disconnect(true);
+ }
+ };
+ this.subscriberGroupEmitter.on("-node", (redis, nodeKey) => {
+ this.emit("-node", redis, nodeKey);
+ this.refreshSlotsCache(refreshSlotsCacheCallback);
+ });
+ this.subscriberGroupEmitter.on("subscriberConnectFailed", ({ delay, error }) => {
+ this.emit("error", error);
+ setTimeout(() => {
+ this.refreshSlotsCache(refreshSlotsCacheCallback);
+ }, delay);
+ });
+ this.subscriberGroupEmitter.on("moved", () => {
+ this.refreshSlotsCache(refreshSlotsCacheCallback);
+ });
+ this.subscriberGroupEmitter.on("-subscriber", () => {
+ this.emit("-subscriber");
+ });
+ this.subscriberGroupEmitter.on("+subscriber", () => {
+ this.emit("+subscriber");
+ });
+ this.subscriberGroupEmitter.on("nodeError", (error, nodeKey) => {
+ this.emit("nodeError", error, nodeKey);
+ });
+ this.subscriberGroupEmitter.on("subscribersReady", () => {
+ this.emit("subscribersReady");
+ });
+ for (const event of ["smessage", "smessageBuffer"]) {
+ this.subscriberGroupEmitter.on(event, (arg1, arg2, arg3) => {
+ this.emit(event, arg1, arg2, arg3);
+ });
+ }
+ }
+}
+(0, applyMixin_1.default)(Cluster, events_1.EventEmitter);
+(0, transaction_1.addTransactionSupport)(Cluster.prototype);
+exports.default = Cluster;
diff --git a/backend/node_modules/ioredis/built/cluster/util.d.ts b/backend/node_modules/ioredis/built/cluster/util.d.ts
new file mode 100644
index 0000000..d8629c3
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/util.d.ts
@@ -0,0 +1,25 @@
+///
+import { SrvRecord } from "dns";
+export declare type NodeKey = string;
+export declare type NodeRole = "master" | "slave" | "all";
+export interface RedisOptions {
+ port: number;
+ host: string;
+ username?: string | undefined;
+ password?: string | undefined;
+ [key: string]: any;
+}
+export interface SrvRecordsGroup {
+ totalWeight: number;
+ records: SrvRecord[];
+}
+export interface GroupedSrvRecords {
+ [key: number]: SrvRecordsGroup;
+}
+export declare function getNodeKey(node: RedisOptions): NodeKey;
+export declare function nodeKeyToRedisOptions(nodeKey: NodeKey): RedisOptions;
+export declare function normalizeNodeOptions(nodes: Array): RedisOptions[];
+export declare function getUniqueHostnamesFromOptions(nodes: RedisOptions[]): string[];
+export declare function groupSrvRecords(records: SrvRecord[]): GroupedSrvRecords;
+export declare function weightSrvRecords(recordsGroup: SrvRecordsGroup): SrvRecord;
+export declare function getConnectionName(component: any, nodeConnectionName: any): string;
diff --git a/backend/node_modules/ioredis/built/cluster/util.js b/backend/node_modules/ioredis/built/cluster/util.js
new file mode 100644
index 0000000..e3a779b
--- /dev/null
+++ b/backend/node_modules/ioredis/built/cluster/util.js
@@ -0,0 +1,100 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getConnectionName = exports.weightSrvRecords = exports.groupSrvRecords = exports.getUniqueHostnamesFromOptions = exports.normalizeNodeOptions = exports.nodeKeyToRedisOptions = exports.getNodeKey = void 0;
+const utils_1 = require("../utils");
+const net_1 = require("net");
+function getNodeKey(node) {
+ node.port = node.port || 6379;
+ node.host = node.host || "127.0.0.1";
+ return node.host + ":" + node.port;
+}
+exports.getNodeKey = getNodeKey;
+function nodeKeyToRedisOptions(nodeKey) {
+ const portIndex = nodeKey.lastIndexOf(":");
+ if (portIndex === -1) {
+ throw new Error(`Invalid node key ${nodeKey}`);
+ }
+ return {
+ host: nodeKey.slice(0, portIndex),
+ port: Number(nodeKey.slice(portIndex + 1)),
+ };
+}
+exports.nodeKeyToRedisOptions = nodeKeyToRedisOptions;
+function normalizeNodeOptions(nodes) {
+ return nodes.map((node) => {
+ const options = {};
+ if (typeof node === "object") {
+ Object.assign(options, node);
+ }
+ else if (typeof node === "string") {
+ Object.assign(options, (0, utils_1.parseURL)(node));
+ }
+ else if (typeof node === "number") {
+ options.port = node;
+ }
+ else {
+ throw new Error("Invalid argument " + node);
+ }
+ if (typeof options.port === "string") {
+ options.port = parseInt(options.port, 10);
+ }
+ // Cluster mode only support db 0
+ delete options.db;
+ if (!options.port) {
+ options.port = 6379;
+ }
+ if (!options.host) {
+ options.host = "127.0.0.1";
+ }
+ return (0, utils_1.resolveTLSProfile)(options);
+ });
+}
+exports.normalizeNodeOptions = normalizeNodeOptions;
+function getUniqueHostnamesFromOptions(nodes) {
+ const uniqueHostsMap = {};
+ nodes.forEach((node) => {
+ uniqueHostsMap[node.host] = true;
+ });
+ return Object.keys(uniqueHostsMap).filter((host) => !(0, net_1.isIP)(host));
+}
+exports.getUniqueHostnamesFromOptions = getUniqueHostnamesFromOptions;
+function groupSrvRecords(records) {
+ const recordsByPriority = {};
+ for (const record of records) {
+ if (!recordsByPriority.hasOwnProperty(record.priority)) {
+ recordsByPriority[record.priority] = {
+ totalWeight: record.weight,
+ records: [record],
+ };
+ }
+ else {
+ recordsByPriority[record.priority].totalWeight += record.weight;
+ recordsByPriority[record.priority].records.push(record);
+ }
+ }
+ return recordsByPriority;
+}
+exports.groupSrvRecords = groupSrvRecords;
+function weightSrvRecords(recordsGroup) {
+ if (recordsGroup.records.length === 1) {
+ recordsGroup.totalWeight = 0;
+ return recordsGroup.records.shift();
+ }
+ // + `recordsGroup.records.length` to support `weight` 0
+ const random = Math.floor(Math.random() * (recordsGroup.totalWeight + recordsGroup.records.length));
+ let total = 0;
+ for (const [i, record] of recordsGroup.records.entries()) {
+ total += 1 + record.weight;
+ if (total > random) {
+ recordsGroup.totalWeight -= record.weight;
+ recordsGroup.records.splice(i, 1);
+ return record;
+ }
+ }
+}
+exports.weightSrvRecords = weightSrvRecords;
+function getConnectionName(component, nodeConnectionName) {
+ const prefix = `ioredis-cluster(${component})`;
+ return nodeConnectionName ? `${prefix}:${nodeConnectionName}` : prefix;
+}
+exports.getConnectionName = getConnectionName;
diff --git a/backend/node_modules/ioredis/built/connectors/AbstractConnector.d.ts b/backend/node_modules/ioredis/built/connectors/AbstractConnector.d.ts
new file mode 100644
index 0000000..14bdbaa
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/AbstractConnector.d.ts
@@ -0,0 +1,12 @@
+import { NetStream } from "../types";
+export declare type ErrorEmitter = (type: string, err: Error) => void;
+export default abstract class AbstractConnector {
+ firstError?: Error;
+ protected connecting: boolean;
+ protected stream: NetStream;
+ private disconnectTimeout;
+ constructor(disconnectTimeout: number);
+ check(info: any): boolean;
+ disconnect(): void;
+ abstract connect(_: ErrorEmitter): Promise;
+}
diff --git a/backend/node_modules/ioredis/built/connectors/AbstractConnector.js b/backend/node_modules/ioredis/built/connectors/AbstractConnector.js
new file mode 100644
index 0000000..2e2151d
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/AbstractConnector.js
@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const debug = (0, utils_1.Debug)("AbstractConnector");
+class AbstractConnector {
+ constructor(disconnectTimeout) {
+ this.connecting = false;
+ this.disconnectTimeout = disconnectTimeout;
+ }
+ check(info) {
+ return true;
+ }
+ disconnect() {
+ this.connecting = false;
+ if (this.stream) {
+ const stream = this.stream; // Make sure callbacks refer to the same instance
+ const timeout = setTimeout(() => {
+ debug("stream %s:%s still open, destroying it", stream.remoteAddress, stream.remotePort);
+ stream.destroy();
+ }, this.disconnectTimeout);
+ stream.on("close", () => clearTimeout(timeout));
+ stream.end();
+ }
+ }
+}
+exports.default = AbstractConnector;
diff --git a/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.d.ts b/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.d.ts
new file mode 100644
index 0000000..2f332ae
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.d.ts
@@ -0,0 +1,5 @@
+import AbstractConnector from "./AbstractConnector";
+interface ConnectorConstructor {
+ new (options: unknown): AbstractConnector;
+}
+export default ConnectorConstructor;
diff --git a/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.js b/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.js
new file mode 100644
index 0000000..c8ad2e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/ConnectorConstructor.js
@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.d.ts b/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.d.ts
new file mode 100644
index 0000000..abd44e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.d.ts
@@ -0,0 +1,11 @@
+import SentinelConnector from "./index";
+import { Sentinel } from "./types";
+export declare class FailoverDetector {
+ private connector;
+ private sentinels;
+ private isDisconnected;
+ constructor(connector: SentinelConnector, sentinels: Sentinel[]);
+ cleanup(): void;
+ subscribe(): Promise;
+ private disconnect;
+}
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.js b/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.js
new file mode 100644
index 0000000..8db28d0
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/FailoverDetector.js
@@ -0,0 +1,45 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FailoverDetector = void 0;
+const utils_1 = require("../../utils");
+const debug = (0, utils_1.Debug)("FailoverDetector");
+const CHANNEL_NAME = "+switch-master";
+class FailoverDetector {
+ // sentinels can't be used for regular commands after this
+ constructor(connector, sentinels) {
+ this.isDisconnected = false;
+ this.connector = connector;
+ this.sentinels = sentinels;
+ }
+ cleanup() {
+ this.isDisconnected = true;
+ for (const sentinel of this.sentinels) {
+ sentinel.client.disconnect();
+ }
+ }
+ async subscribe() {
+ debug("Starting FailoverDetector");
+ const promises = [];
+ for (const sentinel of this.sentinels) {
+ const promise = sentinel.client.subscribe(CHANNEL_NAME).catch((err) => {
+ debug("Failed to subscribe to failover messages on sentinel %s:%s (%s)", sentinel.address.host || "127.0.0.1", sentinel.address.port || 26739, err.message);
+ });
+ promises.push(promise);
+ sentinel.client.on("message", (channel) => {
+ if (!this.isDisconnected && channel === CHANNEL_NAME) {
+ this.disconnect();
+ }
+ });
+ }
+ await Promise.all(promises);
+ }
+ disconnect() {
+ // Avoid disconnecting more than once per failover.
+ // A new FailoverDetector will be created after reconnecting.
+ this.isDisconnected = true;
+ debug("Failover detected, disconnecting");
+ // Will call this.cleanup()
+ this.connector.disconnect();
+ }
+}
+exports.FailoverDetector = FailoverDetector;
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.d.ts b/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.d.ts
new file mode 100644
index 0000000..fbe5f34
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.d.ts
@@ -0,0 +1,13 @@
+import { SentinelAddress } from "./types";
+export default class SentinelIterator implements Iterator> {
+ private cursor;
+ private sentinels;
+ constructor(sentinels: Array>);
+ next(): {
+ done: boolean;
+ value: Partial;
+ };
+ reset(moveCurrentEndpointToFirst: boolean): void;
+ add(sentinel: SentinelAddress): boolean;
+ toString(): string;
+}
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.js b/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.js
new file mode 100644
index 0000000..3399bae
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/SentinelIterator.js
@@ -0,0 +1,37 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function isSentinelEql(a, b) {
+ return ((a.host || "127.0.0.1") === (b.host || "127.0.0.1") &&
+ (a.port || 26379) === (b.port || 26379));
+}
+class SentinelIterator {
+ constructor(sentinels) {
+ this.cursor = 0;
+ this.sentinels = sentinels.slice(0);
+ }
+ next() {
+ const done = this.cursor >= this.sentinels.length;
+ return { done, value: done ? undefined : this.sentinels[this.cursor++] };
+ }
+ reset(moveCurrentEndpointToFirst) {
+ if (moveCurrentEndpointToFirst &&
+ this.sentinels.length > 1 &&
+ this.cursor !== 1) {
+ this.sentinels.unshift(...this.sentinels.splice(this.cursor - 1));
+ }
+ this.cursor = 0;
+ }
+ add(sentinel) {
+ for (let i = 0; i < this.sentinels.length; i++) {
+ if (isSentinelEql(sentinel, this.sentinels[i])) {
+ return false;
+ }
+ }
+ this.sentinels.push(sentinel);
+ return true;
+ }
+ toString() {
+ return `${JSON.stringify(this.sentinels)} @${this.cursor}`;
+ }
+}
+exports.default = SentinelIterator;
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.d.ts b/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.d.ts
new file mode 100644
index 0000000..66660e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.d.ts
@@ -0,0 +1,72 @@
+///
+import { EventEmitter } from "events";
+import { NatMap } from "../../cluster/ClusterOptions";
+import { ConnectionOptions } from "tls";
+import SentinelIterator from "./SentinelIterator";
+import { SentinelAddress } from "./types";
+import AbstractConnector, { ErrorEmitter } from "../AbstractConnector";
+import { NetStream } from "../../types";
+interface AddressFromResponse {
+ port: string;
+ ip: string;
+ flags?: string | undefined;
+}
+declare type PreferredSlaves = ((slaves: AddressFromResponse[]) => AddressFromResponse | null) | Array<{
+ port: string;
+ ip: string;
+ prio?: number | undefined;
+}> | {
+ port: string;
+ ip: string;
+ prio?: number | undefined;
+};
+export { SentinelAddress, SentinelIterator };
+export interface SentinelConnectionOptions {
+ /**
+ * Master group name of the Sentinel
+ */
+ name?: string | undefined;
+ /**
+ * @default "master"
+ */
+ role?: "master" | "slave" | undefined;
+ tls?: ConnectionOptions | undefined;
+ sentinelUsername?: string | undefined;
+ sentinelPassword?: string | undefined;
+ sentinels?: Array> | undefined;
+ sentinelRetryStrategy?: ((retryAttempts: number) => number | void | null) | undefined;
+ sentinelReconnectStrategy?: ((retryAttempts: number) => number | void | null) | undefined;
+ preferredSlaves?: PreferredSlaves | undefined;
+ connectTimeout?: number | undefined;
+ disconnectTimeout?: number | undefined;
+ sentinelCommandTimeout?: number | undefined;
+ enableTLSForSentinelMode?: boolean | undefined;
+ sentinelTLS?: ConnectionOptions | undefined;
+ natMap?: NatMap | undefined;
+ updateSentinels?: boolean | undefined;
+ /**
+ * @default 10
+ */
+ sentinelMaxConnections?: number | undefined;
+ failoverDetector?: boolean | undefined;
+}
+export default class SentinelConnector extends AbstractConnector {
+ protected options: SentinelConnectionOptions;
+ emitter: EventEmitter | null;
+ protected sentinelIterator: SentinelIterator;
+ private retryAttempts;
+ private failoverDetector;
+ constructor(options: SentinelConnectionOptions);
+ check(info: {
+ role?: string;
+ }): boolean;
+ disconnect(): void;
+ connect(eventEmitter: ErrorEmitter): Promise;
+ private updateSentinels;
+ private resolveMaster;
+ private resolveSlave;
+ private sentinelNatResolve;
+ private connectToSentinel;
+ private resolve;
+ private initFailoverDetector;
+}
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.js b/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.js
new file mode 100644
index 0000000..5cb4b48
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/index.js
@@ -0,0 +1,305 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SentinelIterator = void 0;
+const net_1 = require("net");
+const utils_1 = require("../../utils");
+const tls_1 = require("tls");
+const SentinelIterator_1 = require("./SentinelIterator");
+exports.SentinelIterator = SentinelIterator_1.default;
+const AbstractConnector_1 = require("../AbstractConnector");
+const Redis_1 = require("../../Redis");
+const FailoverDetector_1 = require("./FailoverDetector");
+const debug = (0, utils_1.Debug)("SentinelConnector");
+class SentinelConnector extends AbstractConnector_1.default {
+ constructor(options) {
+ super(options.disconnectTimeout);
+ this.options = options;
+ this.emitter = null;
+ this.failoverDetector = null;
+ if (!this.options.sentinels.length) {
+ throw new Error("Requires at least one sentinel to connect to.");
+ }
+ if (!this.options.name) {
+ throw new Error("Requires the name of master.");
+ }
+ this.sentinelIterator = new SentinelIterator_1.default(this.options.sentinels);
+ }
+ check(info) {
+ const roleMatches = !info.role || this.options.role === info.role;
+ if (!roleMatches) {
+ debug("role invalid, expected %s, but got %s", this.options.role, info.role);
+ // Start from the next item.
+ // Note that `reset` will move the cursor to the previous element,
+ // so we advance two steps here.
+ this.sentinelIterator.next();
+ this.sentinelIterator.next();
+ this.sentinelIterator.reset(true);
+ }
+ return roleMatches;
+ }
+ disconnect() {
+ super.disconnect();
+ if (this.failoverDetector) {
+ this.failoverDetector.cleanup();
+ }
+ }
+ connect(eventEmitter) {
+ this.connecting = true;
+ this.retryAttempts = 0;
+ let lastError;
+ const connectToNext = async () => {
+ const endpoint = this.sentinelIterator.next();
+ if (endpoint.done) {
+ this.sentinelIterator.reset(false);
+ const retryDelay = typeof this.options.sentinelRetryStrategy === "function"
+ ? this.options.sentinelRetryStrategy(++this.retryAttempts)
+ : null;
+ let errorMsg = typeof retryDelay !== "number"
+ ? "All sentinels are unreachable and retry is disabled."
+ : `All sentinels are unreachable. Retrying from scratch after ${retryDelay}ms.`;
+ if (lastError) {
+ errorMsg += ` Last error: ${lastError.message}`;
+ }
+ debug(errorMsg);
+ const error = new Error(errorMsg);
+ if (typeof retryDelay === "number") {
+ eventEmitter("error", error);
+ await new Promise((resolve) => setTimeout(resolve, retryDelay));
+ return connectToNext();
+ }
+ else {
+ throw error;
+ }
+ }
+ let resolved = null;
+ let err = null;
+ try {
+ resolved = await this.resolve(endpoint.value);
+ }
+ catch (error) {
+ err = error;
+ }
+ if (!this.connecting) {
+ throw new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG);
+ }
+ const endpointAddress = endpoint.value.host + ":" + endpoint.value.port;
+ if (resolved) {
+ debug("resolved: %s:%s from sentinel %s", resolved.host, resolved.port, endpointAddress);
+ if (this.options.enableTLSForSentinelMode && this.options.tls) {
+ Object.assign(resolved, this.options.tls);
+ this.stream = (0, tls_1.connect)(resolved);
+ this.stream.once("secureConnect", this.initFailoverDetector.bind(this));
+ }
+ else {
+ this.stream = (0, net_1.createConnection)(resolved);
+ this.stream.once("connect", this.initFailoverDetector.bind(this));
+ }
+ this.stream.once("error", (err) => {
+ this.firstError = err;
+ });
+ return this.stream;
+ }
+ else {
+ const errorMsg = err
+ ? "failed to connect to sentinel " +
+ endpointAddress +
+ " because " +
+ err.message
+ : "connected to sentinel " +
+ endpointAddress +
+ " successfully, but got an invalid reply: " +
+ resolved;
+ debug(errorMsg);
+ eventEmitter("sentinelError", new Error(errorMsg));
+ if (err) {
+ lastError = err;
+ }
+ return connectToNext();
+ }
+ };
+ return connectToNext();
+ }
+ async updateSentinels(client) {
+ if (!this.options.updateSentinels) {
+ return;
+ }
+ const result = await client.sentinel("sentinels", this.options.name);
+ if (!Array.isArray(result)) {
+ return;
+ }
+ result
+ .map(utils_1.packObject)
+ .forEach((sentinel) => {
+ const flags = sentinel.flags ? sentinel.flags.split(",") : [];
+ if (flags.indexOf("disconnected") === -1 &&
+ sentinel.ip &&
+ sentinel.port) {
+ const endpoint = this.sentinelNatResolve(addressResponseToAddress(sentinel));
+ if (this.sentinelIterator.add(endpoint)) {
+ debug("adding sentinel %s:%s", endpoint.host, endpoint.port);
+ }
+ }
+ });
+ debug("Updated internal sentinels: %s", this.sentinelIterator);
+ }
+ async resolveMaster(client) {
+ const result = await client.sentinel("get-master-addr-by-name", this.options.name);
+ await this.updateSentinels(client);
+ return this.sentinelNatResolve(Array.isArray(result)
+ ? { host: result[0], port: Number(result[1]) }
+ : null);
+ }
+ async resolveSlave(client) {
+ const result = await client.sentinel("slaves", this.options.name);
+ if (!Array.isArray(result)) {
+ return null;
+ }
+ const availableSlaves = result
+ .map(utils_1.packObject)
+ .filter((slave) => slave.flags && !slave.flags.match(/(disconnected|s_down|o_down)/));
+ return this.sentinelNatResolve(selectPreferredSentinel(availableSlaves, this.options.preferredSlaves));
+ }
+ sentinelNatResolve(item) {
+ if (!item || !this.options.natMap)
+ return item;
+ const key = `${item.host}:${item.port}`;
+ let result = item;
+ if (typeof this.options.natMap === "function") {
+ result = this.options.natMap(key) || item;
+ }
+ else if (typeof this.options.natMap === "object") {
+ result = this.options.natMap[key] || item;
+ }
+ return result;
+ }
+ connectToSentinel(endpoint, options) {
+ const redis = new Redis_1.default({
+ port: endpoint.port || 26379,
+ host: endpoint.host,
+ username: this.options.sentinelUsername || null,
+ password: this.options.sentinelPassword || null,
+ family: endpoint.family ||
+ // @ts-expect-error
+ ("path" in this.options && this.options.path
+ ? undefined
+ : // @ts-expect-error
+ this.options.family),
+ tls: this.options.sentinelTLS,
+ retryStrategy: null,
+ enableReadyCheck: false,
+ connectTimeout: this.options.connectTimeout,
+ commandTimeout: this.options.sentinelCommandTimeout,
+ ...options,
+ });
+ // @ts-expect-error
+ return redis;
+ }
+ async resolve(endpoint) {
+ const client = this.connectToSentinel(endpoint);
+ // ignore the errors since resolve* methods will handle them
+ client.on("error", noop);
+ try {
+ if (this.options.role === "slave") {
+ return await this.resolveSlave(client);
+ }
+ else {
+ return await this.resolveMaster(client);
+ }
+ }
+ finally {
+ client.disconnect();
+ }
+ }
+ async initFailoverDetector() {
+ var _a;
+ if (!this.options.failoverDetector) {
+ return;
+ }
+ // Move the current sentinel to the first position
+ this.sentinelIterator.reset(true);
+ const sentinels = [];
+ // In case of a large amount of sentinels, limit the number of concurrent connections
+ while (sentinels.length < this.options.sentinelMaxConnections) {
+ const { done, value } = this.sentinelIterator.next();
+ if (done) {
+ break;
+ }
+ const client = this.connectToSentinel(value, {
+ lazyConnect: true,
+ retryStrategy: this.options.sentinelReconnectStrategy,
+ });
+ client.on("reconnecting", () => {
+ var _a;
+ // Tests listen to this event
+ (_a = this.emitter) === null || _a === void 0 ? void 0 : _a.emit("sentinelReconnecting");
+ });
+ sentinels.push({ address: value, client });
+ }
+ this.sentinelIterator.reset(false);
+ if (this.failoverDetector) {
+ // Clean up previous detector
+ this.failoverDetector.cleanup();
+ }
+ this.failoverDetector = new FailoverDetector_1.FailoverDetector(this, sentinels);
+ await this.failoverDetector.subscribe();
+ // Tests listen to this event
+ (_a = this.emitter) === null || _a === void 0 ? void 0 : _a.emit("failoverSubscribed");
+ }
+}
+exports.default = SentinelConnector;
+function selectPreferredSentinel(availableSlaves, preferredSlaves) {
+ if (availableSlaves.length === 0) {
+ return null;
+ }
+ let selectedSlave;
+ if (typeof preferredSlaves === "function") {
+ selectedSlave = preferredSlaves(availableSlaves);
+ }
+ else if (preferredSlaves !== null && typeof preferredSlaves === "object") {
+ const preferredSlavesArray = Array.isArray(preferredSlaves)
+ ? preferredSlaves
+ : [preferredSlaves];
+ // sort by priority
+ preferredSlavesArray.sort((a, b) => {
+ // default the priority to 1
+ if (!a.prio) {
+ a.prio = 1;
+ }
+ if (!b.prio) {
+ b.prio = 1;
+ }
+ // lowest priority first
+ if (a.prio < b.prio) {
+ return -1;
+ }
+ if (a.prio > b.prio) {
+ return 1;
+ }
+ return 0;
+ });
+ // loop over preferred slaves and return the first match
+ for (let p = 0; p < preferredSlavesArray.length; p++) {
+ for (let a = 0; a < availableSlaves.length; a++) {
+ const slave = availableSlaves[a];
+ if (slave.ip === preferredSlavesArray[p].ip) {
+ if (slave.port === preferredSlavesArray[p].port) {
+ selectedSlave = slave;
+ break;
+ }
+ }
+ }
+ if (selectedSlave) {
+ break;
+ }
+ }
+ }
+ // if none of the preferred slaves are available, a random available slave is returned
+ if (!selectedSlave) {
+ selectedSlave = (0, utils_1.sample)(availableSlaves);
+ }
+ return addressResponseToAddress(selectedSlave);
+}
+function addressResponseToAddress(input) {
+ return { host: input.ip, port: Number(input.port) };
+}
+function noop() { }
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.d.ts b/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.d.ts
new file mode 100644
index 0000000..4734cdc
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.d.ts
@@ -0,0 +1,21 @@
+import { RedisOptions } from "../../redis/RedisOptions";
+export interface SentinelAddress {
+ port: number;
+ host: string;
+ family?: number;
+}
+export interface RedisClient {
+ options: RedisOptions;
+ sentinel(subcommand: "sentinels", name: string): Promise;
+ sentinel(subcommand: "get-master-addr-by-name", name: string): Promise;
+ sentinel(subcommand: "slaves", name: string): Promise;
+ subscribe(...channelNames: string[]): Promise;
+ on(event: "message", callback: (channel: string, message: string) => void): void;
+ on(event: "error", callback: (error: Error) => void): void;
+ on(event: "reconnecting", callback: () => void): void;
+ disconnect(): void;
+}
+export interface Sentinel {
+ address: Partial;
+ client: RedisClient;
+}
diff --git a/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.js b/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.js
new file mode 100644
index 0000000..c8ad2e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/SentinelConnector/types.js
@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/backend/node_modules/ioredis/built/connectors/StandaloneConnector.d.ts b/backend/node_modules/ioredis/built/connectors/StandaloneConnector.d.ts
new file mode 100644
index 0000000..45fb552
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/StandaloneConnector.d.ts
@@ -0,0 +1,17 @@
+///
+import { IpcNetConnectOpts, TcpNetConnectOpts } from "net";
+import { ConnectionOptions } from "tls";
+import { NetStream } from "../types";
+import AbstractConnector, { ErrorEmitter } from "./AbstractConnector";
+declare type TcpOptions = Pick;
+declare type IpcOptions = Pick;
+export declare type StandaloneConnectionOptions = Partial & {
+ disconnectTimeout?: number | undefined;
+ tls?: ConnectionOptions | undefined;
+};
+export default class StandaloneConnector extends AbstractConnector {
+ protected options: StandaloneConnectionOptions;
+ constructor(options: StandaloneConnectionOptions);
+ connect(_: ErrorEmitter): Promise;
+}
+export {};
diff --git a/backend/node_modules/ioredis/built/connectors/StandaloneConnector.js b/backend/node_modules/ioredis/built/connectors/StandaloneConnector.js
new file mode 100644
index 0000000..d17c91a
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/StandaloneConnector.js
@@ -0,0 +1,69 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const net_1 = require("net");
+const tls_1 = require("tls");
+const utils_1 = require("../utils");
+const AbstractConnector_1 = require("./AbstractConnector");
+class StandaloneConnector extends AbstractConnector_1.default {
+ constructor(options) {
+ super(options.disconnectTimeout);
+ this.options = options;
+ }
+ connect(_) {
+ const { options } = this;
+ this.connecting = true;
+ let connectionOptions;
+ if ("path" in options && options.path) {
+ connectionOptions = {
+ path: options.path,
+ };
+ }
+ else {
+ connectionOptions = {};
+ if ("port" in options && options.port != null) {
+ connectionOptions.port = options.port;
+ }
+ if ("host" in options && options.host != null) {
+ connectionOptions.host = options.host;
+ }
+ if ("family" in options && options.family != null) {
+ connectionOptions.family = options.family;
+ }
+ }
+ if (options.tls) {
+ Object.assign(connectionOptions, options.tls);
+ }
+ // TODO:
+ // We use native Promise here since other Promise
+ // implementation may use different schedulers that
+ // cause issue when the stream is resolved in the
+ // next tick.
+ // Should use the provided promise in the next major
+ // version and do not connect before resolved.
+ return new Promise((resolve, reject) => {
+ process.nextTick(() => {
+ if (!this.connecting) {
+ reject(new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG));
+ return;
+ }
+ try {
+ if (options.tls) {
+ this.stream = (0, tls_1.connect)(connectionOptions);
+ }
+ else {
+ this.stream = (0, net_1.createConnection)(connectionOptions);
+ }
+ }
+ catch (err) {
+ reject(err);
+ return;
+ }
+ this.stream.once("error", (err) => {
+ this.firstError = err;
+ });
+ resolve(this.stream);
+ });
+ });
+ }
+}
+exports.default = StandaloneConnector;
diff --git a/backend/node_modules/ioredis/built/connectors/index.d.ts b/backend/node_modules/ioredis/built/connectors/index.d.ts
new file mode 100644
index 0000000..fa74d6f
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/index.d.ts
@@ -0,0 +1,3 @@
+import StandaloneConnector from "./StandaloneConnector";
+import SentinelConnector from "./SentinelConnector";
+export { StandaloneConnector, SentinelConnector };
diff --git a/backend/node_modules/ioredis/built/connectors/index.js b/backend/node_modules/ioredis/built/connectors/index.js
new file mode 100644
index 0000000..49a03a2
--- /dev/null
+++ b/backend/node_modules/ioredis/built/connectors/index.js
@@ -0,0 +1,7 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SentinelConnector = exports.StandaloneConnector = void 0;
+const StandaloneConnector_1 = require("./StandaloneConnector");
+exports.StandaloneConnector = StandaloneConnector_1.default;
+const SentinelConnector_1 = require("./SentinelConnector");
+exports.SentinelConnector = SentinelConnector_1.default;
diff --git a/backend/node_modules/ioredis/built/constants/TLSProfiles.d.ts b/backend/node_modules/ioredis/built/constants/TLSProfiles.d.ts
new file mode 100644
index 0000000..7547966
--- /dev/null
+++ b/backend/node_modules/ioredis/built/constants/TLSProfiles.d.ts
@@ -0,0 +1,9 @@
+declare const TLSProfiles: {
+ readonly RedisCloudFixed: {
+ readonly ca: "-----BEGIN CERTIFICATE-----\nMIIDTzCCAjegAwIBAgIJAKSVpiDswLcwMA0GCSqGSIb3DQEBBQUAMD4xFjAUBgNV\nBAoMDUdhcmFudGlhIERhdGExJDAiBgNVBAMMG1NTTCBDZXJ0aWZpY2F0aW9uIEF1\ndGhvcml0eTAeFw0xMzEwMDExMjE0NTVaFw0yMzA5MjkxMjE0NTVaMD4xFjAUBgNV\nBAoMDUdhcmFudGlhIERhdGExJDAiBgNVBAMMG1NTTCBDZXJ0aWZpY2F0aW9uIEF1\ndGhvcml0eTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALZqkh/DczWP\nJnxnHLQ7QL0T4B4CDKWBKCcisriGbA6ZePWVNo4hfKQC6JrzfR+081NeD6VcWUiz\nrmd+jtPhIY4c+WVQYm5PKaN6DT1imYdxQw7aqO5j2KUCEh/cznpLxeSHoTxlR34E\nQwF28Wl3eg2vc5ct8LjU3eozWVk3gb7alx9mSA2SgmuX5lEQawl++rSjsBStemY2\nBDwOpAMXIrdEyP/cVn8mkvi/BDs5M5G+09j0gfhyCzRWMQ7Hn71u1eolRxwVxgi3\nTMn+/vTaFSqxKjgck6zuAYjBRPaHe7qLxHNr1So/Mc9nPy+3wHebFwbIcnUojwbp\n4nctkWbjb2cCAwEAAaNQME4wHQYDVR0OBBYEFP1whtcrydmW3ZJeuSoKZIKjze3w\nMB8GA1UdIwQYMBaAFP1whtcrydmW3ZJeuSoKZIKjze3wMAwGA1UdEwQFMAMBAf8w\nDQYJKoZIhvcNAQEFBQADggEBAG2erXhwRAa7+ZOBs0B6X57Hwyd1R4kfmXcs0rta\nlbPpvgULSiB+TCbf3EbhJnHGyvdCY1tvlffLjdA7HJ0PCOn+YYLBA0pTU/dyvrN6\nSu8NuS5yubnt9mb13nDGYo1rnt0YRfxN+8DM3fXIVr038A30UlPX2Ou1ExFJT0MZ\nuFKY6ZvLdI6/1cbgmguMlAhM+DhKyV6Sr5699LM3zqeI816pZmlREETYkGr91q7k\nBpXJu/dtHaGxg1ZGu6w/PCsYGUcECWENYD4VQPd8N32JjOfu6vEgoEAwfPP+3oGp\nZ4m3ewACcWOAenqflb+cQYC4PsF7qbXDmRaWrbKntOlZ3n0=\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\n616pxqo=\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nUhWfa/HQYOAPDdEjNgnVwLI23b8t0TozyCWw7q8h\n-----END CERTIFICATE-----\n\n-----BEGIN CERTIFICATE-----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\nZgKnO/Fx2hBgTxhOTMYaD312kg==\n-----END CERTIFICATE-----\n\n-----BEGIN CERTIFICATE-----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\nWD9f\n-----END CERTIFICATE-----";
+ };
+ readonly RedisCloudFlexible: {
+ readonly ca: "-----BEGIN CERTIFICATE-----\nMIIDTzCCAjegAwIBAgIJAKSVpiDswLcwMA0GCSqGSIb3DQEBBQUAMD4xFjAUBgNV\nBAoMDUdhcmFudGlhIERhdGExJDAiBgNVBAMMG1NTTCBDZXJ0aWZpY2F0aW9uIEF1\ndGhvcml0eTAeFw0xMzEwMDExMjE0NTVaFw0yMzA5MjkxMjE0NTVaMD4xFjAUBgNV\nBAoMDUdhcmFudGlhIERhdGExJDAiBgNVBAMMG1NTTCBDZXJ0aWZpY2F0aW9uIEF1\ndGhvcml0eTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALZqkh/DczWP\nJnxnHLQ7QL0T4B4CDKWBKCcisriGbA6ZePWVNo4hfKQC6JrzfR+081NeD6VcWUiz\nrmd+jtPhIY4c+WVQYm5PKaN6DT1imYdxQw7aqO5j2KUCEh/cznpLxeSHoTxlR34E\nQwF28Wl3eg2vc5ct8LjU3eozWVk3gb7alx9mSA2SgmuX5lEQawl++rSjsBStemY2\nBDwOpAMXIrdEyP/cVn8mkvi/BDs5M5G+09j0gfhyCzRWMQ7Hn71u1eolRxwVxgi3\nTMn+/vTaFSqxKjgck6zuAYjBRPaHe7qLxHNr1So/Mc9nPy+3wHebFwbIcnUojwbp\n4nctkWbjb2cCAwEAAaNQME4wHQYDVR0OBBYEFP1whtcrydmW3ZJeuSoKZIKjze3w\nMB8GA1UdIwQYMBaAFP1whtcrydmW3ZJeuSoKZIKjze3wMAwGA1UdEwQFMAMBAf8w\nDQYJKoZIhvcNAQEFBQADggEBAG2erXhwRAa7+ZOBs0B6X57Hwyd1R4kfmXcs0rta\nlbPpvgULSiB+TCbf3EbhJnHGyvdCY1tvlffLjdA7HJ0PCOn+YYLBA0pTU/dyvrN6\nSu8NuS5yubnt9mb13nDGYo1rnt0YRfxN+8DM3fXIVr038A30UlPX2Ou1ExFJT0MZ\nuFKY6ZvLdI6/1cbgmguMlAhM+DhKyV6Sr5699LM3zqeI816pZmlREETYkGr91q7k\nBpXJu/dtHaGxg1ZGu6w/PCsYGUcECWENYD4VQPd8N32JjOfu6vEgoEAwfPP+3oGp\nZ4m3ewACcWOAenqflb+cQYC4PsF7qbXDmRaWrbKntOlZ3n0=\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\n616pxqo=\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nUhWfa/HQYOAPDdEjNgnVwLI23b8t0TozyCWw7q8h\n-----END CERTIFICATE-----\n\n-----BEGIN CERTIFICATE-----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\nZgKnO/Fx2hBgTxhOTMYaD312kg==\n-----END CERTIFICATE-----\n\n-----BEGIN CERTIFICATE-----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\nWD9f\n-----END CERTIFICATE-----";
+ };
+};
+export default TLSProfiles;
diff --git a/backend/node_modules/ioredis/built/constants/TLSProfiles.js b/backend/node_modules/ioredis/built/constants/TLSProfiles.js
new file mode 100644
index 0000000..f90760d
--- /dev/null
+++ b/backend/node_modules/ioredis/built/constants/TLSProfiles.js
@@ -0,0 +1,149 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * TLS settings for Redis Cloud. Updated on 2022-08-19.
+ */
+const RedisCloudCA = `-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+-----BEGIN CERTIFICATE-----
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+Mi5nbG9iYWxzaWduLmNvbS9yb290cjMwOwYIKwYBBQUHMAKGL2h0dHA6Ly9zZWN1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+-----END CERTIFICATE-----
+
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----`;
+const TLSProfiles = {
+ RedisCloudFixed: { ca: RedisCloudCA },
+ RedisCloudFlexible: { ca: RedisCloudCA },
+};
+exports.default = TLSProfiles;
diff --git a/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.d.ts b/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.d.ts
new file mode 100644
index 0000000..870640f
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.d.ts
@@ -0,0 +1,7 @@
+import { RedisError } from "redis-errors";
+export default class ClusterAllFailedError extends RedisError {
+ lastNodeError: RedisError;
+ static defaultMessage: string;
+ constructor(message: any, lastNodeError: RedisError);
+ get name(): string;
+}
diff --git a/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.js b/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.js
new file mode 100644
index 0000000..c223f16
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/ClusterAllFailedError.js
@@ -0,0 +1,15 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const redis_errors_1 = require("redis-errors");
+class ClusterAllFailedError extends redis_errors_1.RedisError {
+ constructor(message, lastNodeError) {
+ super(message);
+ this.lastNodeError = lastNodeError;
+ Error.captureStackTrace(this, this.constructor);
+ }
+ get name() {
+ return this.constructor.name;
+ }
+}
+exports.default = ClusterAllFailedError;
+ClusterAllFailedError.defaultMessage = "Failed to refresh slots cache.";
diff --git a/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.d.ts b/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.d.ts
new file mode 100644
index 0000000..9c4b4e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.d.ts
@@ -0,0 +1,5 @@
+import { AbortError } from "redis-errors";
+export default class MaxRetriesPerRequestError extends AbortError {
+ constructor(maxRetriesPerRequest: number);
+ get name(): string;
+}
diff --git a/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.js b/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.js
new file mode 100644
index 0000000..d8c8e1d
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/MaxRetriesPerRequestError.js
@@ -0,0 +1,14 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const redis_errors_1 = require("redis-errors");
+class MaxRetriesPerRequestError extends redis_errors_1.AbortError {
+ constructor(maxRetriesPerRequest) {
+ const message = `Reached the max retries per request limit (which is ${maxRetriesPerRequest}). Refer to "maxRetriesPerRequest" option for details.`;
+ super(message);
+ Error.captureStackTrace(this, this.constructor);
+ }
+ get name() {
+ return this.constructor.name;
+ }
+}
+exports.default = MaxRetriesPerRequestError;
diff --git a/backend/node_modules/ioredis/built/errors/index.d.ts b/backend/node_modules/ioredis/built/errors/index.d.ts
new file mode 100644
index 0000000..6d25308
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/index.d.ts
@@ -0,0 +1,2 @@
+import MaxRetriesPerRequestError from "./MaxRetriesPerRequestError";
+export { MaxRetriesPerRequestError };
diff --git a/backend/node_modules/ioredis/built/errors/index.js b/backend/node_modules/ioredis/built/errors/index.js
new file mode 100644
index 0000000..02b72a9
--- /dev/null
+++ b/backend/node_modules/ioredis/built/errors/index.js
@@ -0,0 +1,5 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MaxRetriesPerRequestError = void 0;
+const MaxRetriesPerRequestError_1 = require("./MaxRetriesPerRequestError");
+exports.MaxRetriesPerRequestError = MaxRetriesPerRequestError_1.default;
diff --git a/backend/node_modules/ioredis/built/index.d.ts b/backend/node_modules/ioredis/built/index.d.ts
new file mode 100644
index 0000000..d98fa59
--- /dev/null
+++ b/backend/node_modules/ioredis/built/index.d.ts
@@ -0,0 +1,43 @@
+export { default } from "./Redis";
+export { default as Redis } from "./Redis";
+export { default as Cluster } from "./cluster";
+/**
+ * @ignore
+ */
+export { default as Command } from "./Command";
+/**
+ * @ignore
+ */
+export { default as RedisCommander, Result, ClientContext, } from "./utils/RedisCommander";
+/**
+ * @ignore
+ */
+export { default as ScanStream } from "./ScanStream";
+/**
+ * @ignore
+ */
+export { default as Pipeline } from "./Pipeline";
+/**
+ * @ignore
+ */
+export { default as AbstractConnector } from "./connectors/AbstractConnector";
+/**
+ * @ignore
+ */
+export { default as SentinelConnector, SentinelIterator, } from "./connectors/SentinelConnector";
+/**
+ * @ignore
+ */
+export { Callback } from "./types";
+export { SentinelAddress, SentinelConnectionOptions, } from "./connectors/SentinelConnector";
+export { StandaloneConnectionOptions } from "./connectors/StandaloneConnector";
+export { RedisOptions, CommonRedisOptions } from "./redis/RedisOptions";
+export { ClusterNode } from "./cluster";
+export { ClusterOptions, DNSLookupFunction, DNSResolveSrvFunction, NatMap, } from "./cluster/ClusterOptions";
+export { NodeRole } from "./cluster/util";
+export type { RedisKey, RedisValue, ChainableCommander, } from "./utils/RedisCommander";
+export declare const ReplyError: any;
+/**
+ * @ignore
+ */
+export declare function print(err: Error | null, reply?: any): void;
diff --git a/backend/node_modules/ioredis/built/index.js b/backend/node_modules/ioredis/built/index.js
new file mode 100644
index 0000000..24a1895
--- /dev/null
+++ b/backend/node_modules/ioredis/built/index.js
@@ -0,0 +1,62 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.print = exports.ReplyError = exports.SentinelIterator = exports.SentinelConnector = exports.AbstractConnector = exports.Pipeline = exports.ScanStream = exports.Command = exports.Cluster = exports.Redis = exports.default = void 0;
+exports = module.exports = require("./Redis").default;
+var Redis_1 = require("./Redis");
+Object.defineProperty(exports, "default", { enumerable: true, get: function () { return Redis_1.default; } });
+var Redis_2 = require("./Redis");
+Object.defineProperty(exports, "Redis", { enumerable: true, get: function () { return Redis_2.default; } });
+var cluster_1 = require("./cluster");
+Object.defineProperty(exports, "Cluster", { enumerable: true, get: function () { return cluster_1.default; } });
+/**
+ * @ignore
+ */
+var Command_1 = require("./Command");
+Object.defineProperty(exports, "Command", { enumerable: true, get: function () { return Command_1.default; } });
+/**
+ * @ignore
+ */
+var ScanStream_1 = require("./ScanStream");
+Object.defineProperty(exports, "ScanStream", { enumerable: true, get: function () { return ScanStream_1.default; } });
+/**
+ * @ignore
+ */
+var Pipeline_1 = require("./Pipeline");
+Object.defineProperty(exports, "Pipeline", { enumerable: true, get: function () { return Pipeline_1.default; } });
+/**
+ * @ignore
+ */
+var AbstractConnector_1 = require("./connectors/AbstractConnector");
+Object.defineProperty(exports, "AbstractConnector", { enumerable: true, get: function () { return AbstractConnector_1.default; } });
+/**
+ * @ignore
+ */
+var SentinelConnector_1 = require("./connectors/SentinelConnector");
+Object.defineProperty(exports, "SentinelConnector", { enumerable: true, get: function () { return SentinelConnector_1.default; } });
+Object.defineProperty(exports, "SentinelIterator", { enumerable: true, get: function () { return SentinelConnector_1.SentinelIterator; } });
+// No TS typings
+exports.ReplyError = require("redis-errors").ReplyError;
+/**
+ * @ignore
+ */
+Object.defineProperty(exports, "Promise", {
+ get() {
+ console.warn("ioredis v5 does not support plugging third-party Promise library anymore. Native Promise will be used.");
+ return Promise;
+ },
+ set(_lib) {
+ console.warn("ioredis v5 does not support plugging third-party Promise library anymore. Native Promise will be used.");
+ },
+});
+/**
+ * @ignore
+ */
+function print(err, reply) {
+ if (err) {
+ console.log("Error: " + err);
+ }
+ else {
+ console.log("Reply: " + reply);
+ }
+}
+exports.print = print;
diff --git a/backend/node_modules/ioredis/built/redis/RedisOptions.d.ts b/backend/node_modules/ioredis/built/redis/RedisOptions.d.ts
new file mode 100644
index 0000000..6242728
--- /dev/null
+++ b/backend/node_modules/ioredis/built/redis/RedisOptions.d.ts
@@ -0,0 +1,197 @@
+import { CommanderOptions } from "../utils/Commander";
+import ConnectorConstructor from "../connectors/ConnectorConstructor";
+import { SentinelConnectionOptions } from "../connectors/SentinelConnector";
+import { StandaloneConnectionOptions } from "../connectors/StandaloneConnector";
+export declare type ReconnectOnError = (err: Error) => boolean | 1 | 2;
+export interface CommonRedisOptions extends CommanderOptions {
+ Connector?: ConnectorConstructor | undefined;
+ retryStrategy?: ((times: number) => number | void | null) | undefined;
+ /**
+ * If a command does not return a reply within a set number of milliseconds,
+ * a "Command timed out" error will be thrown.
+ */
+ commandTimeout?: number | undefined;
+ /**
+ * Enables client-side timeout protection for blocking commands when set
+ * to a positive number. If `blockingTimeout` is undefined, `0`, or
+ * negative (e.g. `-1`), the protection is disabled and no client-side
+ * timers are installed for blocking commands.
+ */
+ blockingTimeout?: number | undefined;
+ /**
+ * Grace period (ms) added to blocking command timeouts. Only used when
+ * `blockingTimeout` is a positive number. Defaults to 100ms.
+ */
+ blockingTimeoutGrace?: number | undefined;
+ /**
+ * If the socket does not receive data within a set number of milliseconds:
+ * 1. the socket is considered "dead" and will be destroyed
+ * 2. the client will reject any running commands (altought they might have been processed by the server)
+ * 3. the reconnect strategy will kick in (depending on the configuration)
+ */
+ socketTimeout?: number | undefined;
+ /**
+ * Enable/disable keep-alive functionality.
+ * @link https://nodejs.org/api/net.html#socketsetkeepaliveenable-initialdelay
+ * @default 0
+ */
+ keepAlive?: number | undefined;
+ /**
+ * Enable/disable the use of Nagle's algorithm.
+ * @link https://nodejs.org/api/net.html#socketsetnodelaynodelay
+ * @default true
+ */
+ noDelay?: boolean | undefined;
+ /**
+ * Set the name of the connection to make it easier to identity the connection
+ * in client list.
+ * @link https://redis.io/commands/client-setname
+ */
+ connectionName?: string | undefined;
+ /**
+ * If true, skips setting library info via CLIENT SETINFO.
+ * @link https://redis.io/docs/latest/commands/client-setinfo/
+ * @default false
+ */
+ disableClientInfo?: boolean | undefined;
+ /**
+ * Tag to append to the library name in CLIENT SETINFO (ioredis(tag)).
+ * @link https://redis.io/docs/latest/commands/client-setinfo/
+ * @default undefined
+ */
+ clientInfoTag?: string | undefined;
+ /**
+ * If set, client will send AUTH command with the value of this option as the first argument when connected.
+ * This is supported since Redis 6.
+ */
+ username?: string | undefined;
+ /**
+ * If set, client will send AUTH command with the value of this option when connected.
+ */
+ password?: string | undefined;
+ /**
+ * Database index to use.
+ *
+ * @default 0
+ */
+ db?: number | undefined;
+ /**
+ * When the client reconnects, channels subscribed in the previous connection will be
+ * resubscribed automatically if `autoResubscribe` is `true`.
+ * @default true
+ */
+ autoResubscribe?: boolean | undefined;
+ /**
+ * Whether or not to resend unfulfilled commands on reconnect.
+ * Unfulfilled commands are most likely to be blocking commands such as `brpop` or `blpop`.
+ * @default true
+ */
+ autoResendUnfulfilledCommands?: boolean | undefined;
+ /**
+ * Whether or not to reconnect on certain Redis errors.
+ * This options by default is `null`, which means it should never reconnect on Redis errors.
+ * You can pass a function that accepts an Redis error, and returns:
+ * - `true` or `1` to trigger a reconnection.
+ * - `false` or `0` to not reconnect.
+ * - `2` to reconnect and resend the failed command (who triggered the error) after reconnection.
+ * @example
+ * ```js
+ * const redis = new Redis({
+ * reconnectOnError(err) {
+ * const targetError = "READONLY";
+ * if (err.message.includes(targetError)) {
+ * // Only reconnect when the error contains "READONLY"
+ * return true; // or `return 1;`
+ * }
+ * },
+ * });
+ * ```
+ * @default null
+ */
+ reconnectOnError?: ReconnectOnError | null | undefined;
+ /**
+ * @default false
+ */
+ readOnly?: boolean | undefined;
+ /**
+ * When enabled, numbers returned by Redis will be converted to JavaScript strings instead of numbers.
+ * This is necessary if you want to handle big numbers (above `Number.MAX_SAFE_INTEGER` === 2^53).
+ * @default false
+ */
+ stringNumbers?: boolean | undefined;
+ /**
+ * How long the client will wait before killing a socket due to inactivity during initial connection.
+ * @default 10000
+ */
+ connectTimeout?: number | undefined;
+ /**
+ * This option is used internally when you call `redis.monitor()` to tell Redis
+ * to enter the monitor mode when the connection is established.
+ *
+ * @default false
+ */
+ monitor?: boolean | undefined;
+ /**
+ * The commands that don't get a reply due to the connection to the server is lost are
+ * put into a queue and will be resent on reconnect (if allowed by the `retryStrategy` option).
+ * This option is used to configure how many reconnection attempts should be allowed before
+ * the queue is flushed with a `MaxRetriesPerRequestError` error.
+ * Set this options to `null` instead of a number to let commands wait forever
+ * until the connection is alive again.
+ *
+ * @default 20
+ */
+ maxRetriesPerRequest?: number | null | undefined;
+ /**
+ * @default 10000
+ */
+ maxLoadingRetryTime?: number | undefined;
+ /**
+ * @default false
+ */
+ enableAutoPipelining?: boolean | undefined;
+ /**
+ * @default []
+ */
+ autoPipeliningIgnoredCommands?: string[] | undefined;
+ offlineQueue?: boolean | undefined;
+ commandQueue?: boolean | undefined;
+ /**
+ *
+ * By default, if the connection to Redis server has not been established, commands are added to a queue
+ * and are executed once the connection is "ready" (when `enableReadyCheck` is true, "ready" means
+ * the Redis server has loaded the database from disk, otherwise means the connection to the Redis
+ * server has been established). If this option is false, when execute the command when the connection
+ * isn't ready, an error will be returned.
+ *
+ * @default true
+ */
+ enableOfflineQueue?: boolean | undefined;
+ /**
+ * The client will sent an INFO command to check whether the server is still loading data from the disk (
+ * which happens when the server is just launched) when the connection is established, and only wait until
+ * the loading process is finished before emitting the `ready` event.
+ *
+ * @default true
+ */
+ enableReadyCheck?: boolean | undefined;
+ /**
+ * When a Redis instance is initialized, a connection to the server is immediately established. Set this to
+ * true will delay the connection to the server until the first command is sent or `redis.connect()` is called
+ * explicitly. When `redis.connect()` is called explicitly, a Promise is returned, which will be resolved
+ * when the connection is ready or rejected when it fails. The rejection should be handled by the user.
+ *
+ * @default false
+ */
+ lazyConnect?: boolean | undefined;
+ /**
+ * @default undefined
+ */
+ scripts?: Record | undefined;
+}
+export declare type RedisOptions = CommonRedisOptions & SentinelConnectionOptions & StandaloneConnectionOptions;
+export declare const DEFAULT_REDIS_OPTIONS: RedisOptions;
diff --git a/backend/node_modules/ioredis/built/redis/RedisOptions.js b/backend/node_modules/ioredis/built/redis/RedisOptions.js
new file mode 100644
index 0000000..99ee7dc
--- /dev/null
+++ b/backend/node_modules/ioredis/built/redis/RedisOptions.js
@@ -0,0 +1,58 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DEFAULT_REDIS_OPTIONS = void 0;
+exports.DEFAULT_REDIS_OPTIONS = {
+ // Connection
+ port: 6379,
+ host: "localhost",
+ family: 0,
+ connectTimeout: 10000,
+ disconnectTimeout: 2000,
+ retryStrategy: function (times) {
+ return Math.min(times * 50, 2000);
+ },
+ keepAlive: 0,
+ noDelay: true,
+ connectionName: null,
+ disableClientInfo: false,
+ clientInfoTag: undefined,
+ // Sentinel
+ sentinels: null,
+ name: null,
+ role: "master",
+ sentinelRetryStrategy: function (times) {
+ return Math.min(times * 10, 1000);
+ },
+ sentinelReconnectStrategy: function () {
+ // This strategy only applies when sentinels are used for detecting
+ // a failover, not during initial master resolution.
+ // The deployment can still function when some of the sentinels are down
+ // for a long period of time, so we may not want to attempt reconnection
+ // very often. Therefore the default interval is fairly long (1 minute).
+ return 60000;
+ },
+ natMap: null,
+ enableTLSForSentinelMode: false,
+ updateSentinels: true,
+ failoverDetector: false,
+ // Status
+ username: null,
+ password: null,
+ db: 0,
+ // Others
+ enableOfflineQueue: true,
+ enableReadyCheck: true,
+ autoResubscribe: true,
+ autoResendUnfulfilledCommands: true,
+ lazyConnect: false,
+ keyPrefix: "",
+ reconnectOnError: null,
+ readOnly: false,
+ stringNumbers: false,
+ maxRetriesPerRequest: 20,
+ maxLoadingRetryTime: 10000,
+ enableAutoPipelining: false,
+ autoPipeliningIgnoredCommands: [],
+ sentinelMaxConnections: 10,
+ blockingTimeoutGrace: 100,
+};
diff --git a/backend/node_modules/ioredis/built/redis/event_handler.d.ts b/backend/node_modules/ioredis/built/redis/event_handler.d.ts
new file mode 100644
index 0000000..1ce79dd
--- /dev/null
+++ b/backend/node_modules/ioredis/built/redis/event_handler.d.ts
@@ -0,0 +1,4 @@
+export declare function connectHandler(self: any): () => void;
+export declare function closeHandler(self: any): () => void;
+export declare function errorHandler(self: any): (error: any) => void;
+export declare function readyHandler(self: any): () => void;
diff --git a/backend/node_modules/ioredis/built/redis/event_handler.js b/backend/node_modules/ioredis/built/redis/event_handler.js
new file mode 100644
index 0000000..ba8b1dc
--- /dev/null
+++ b/backend/node_modules/ioredis/built/redis/event_handler.js
@@ -0,0 +1,315 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.readyHandler = exports.errorHandler = exports.closeHandler = exports.connectHandler = void 0;
+const redis_errors_1 = require("redis-errors");
+const Command_1 = require("../Command");
+const errors_1 = require("../errors");
+const utils_1 = require("../utils");
+const DataHandler_1 = require("../DataHandler");
+const debug = (0, utils_1.Debug)("connection");
+function connectHandler(self) {
+ return function () {
+ var _a;
+ self.setStatus("connect");
+ self.resetCommandQueue();
+ // AUTH command should be processed before any other commands
+ let flushed = false;
+ const { connectionEpoch } = self;
+ if (self.condition.auth) {
+ self.auth(self.condition.auth, function (err) {
+ if (connectionEpoch !== self.connectionEpoch) {
+ return;
+ }
+ if (err) {
+ if (err.message.indexOf("no password is set") !== -1) {
+ console.warn("[WARN] Redis server does not require a password, but a password was supplied.");
+ }
+ else if (err.message.indexOf("without any password configured for the default user") !== -1) {
+ console.warn("[WARN] This Redis server's `default` user does not require a password, but a password was supplied");
+ }
+ else if (err.message.indexOf("wrong number of arguments for 'auth' command") !== -1) {
+ console.warn(`[ERROR] The server returned "wrong number of arguments for 'auth' command". You are probably passing both username and password to Redis version 5 or below. You should only pass the 'password' option for Redis version 5 and under.`);
+ }
+ else {
+ flushed = true;
+ self.recoverFromFatalError(err, err);
+ }
+ }
+ });
+ }
+ if (self.condition.select) {
+ self.select(self.condition.select).catch((err) => {
+ // If the node is in cluster mode, select is disallowed.
+ // In this case, reconnect won't help.
+ self.silentEmit("error", err);
+ });
+ }
+ /*
+ No need to keep the reference of DataHandler here
+ because we don't need to do the cleanup.
+ `Stream#end()` will remove all listeners for us.
+ */
+ new DataHandler_1.default(self, {
+ stringNumbers: self.options.stringNumbers,
+ });
+ const clientCommandPromises = [];
+ if (self.options.connectionName) {
+ debug("set the connection name [%s]", self.options.connectionName);
+ clientCommandPromises.push(self.client("setname", self.options.connectionName).catch(utils_1.noop));
+ }
+ if (!self.options.disableClientInfo) {
+ debug("set the client info");
+ clientCommandPromises.push((0, utils_1.getPackageMeta)()
+ .then((packageMeta) => {
+ return self
+ .client("SETINFO", "LIB-VER", packageMeta.version)
+ .catch(utils_1.noop);
+ })
+ .catch(utils_1.noop));
+ clientCommandPromises.push(self
+ .client("SETINFO", "LIB-NAME", ((_a = self.options) === null || _a === void 0 ? void 0 : _a.clientInfoTag)
+ ? `ioredis(${self.options.clientInfoTag})`
+ : "ioredis")
+ .catch(utils_1.noop));
+ }
+ Promise.all(clientCommandPromises)
+ .catch(utils_1.noop)
+ .finally(() => {
+ if (!self.options.enableReadyCheck) {
+ exports.readyHandler(self)();
+ }
+ if (self.options.enableReadyCheck) {
+ self._readyCheck(function (err, info) {
+ if (connectionEpoch !== self.connectionEpoch) {
+ return;
+ }
+ if (err) {
+ if (!flushed) {
+ self.recoverFromFatalError(new Error("Ready check failed: " + err.message), err);
+ }
+ }
+ else {
+ if (self.connector.check(info)) {
+ exports.readyHandler(self)();
+ }
+ else {
+ self.disconnect(true);
+ }
+ }
+ });
+ }
+ });
+ };
+}
+exports.connectHandler = connectHandler;
+function abortError(command) {
+ const err = new redis_errors_1.AbortError("Command aborted due to connection close");
+ err.command = {
+ name: command.name,
+ args: command.args,
+ };
+ return err;
+}
+// If a contiguous set of pipeline commands starts from index zero then they
+// can be safely reattempted. If however we have a chain of pipelined commands
+// starting at index 1 or more it means we received a partial response before
+// the connection close and those pipelined commands must be aborted. For
+// example, if the queue looks like this: [2, 3, 4, 0, 1, 2] then after
+// aborting and purging we'll have a queue that looks like this: [0, 1, 2]
+function abortIncompletePipelines(commandQueue) {
+ var _a;
+ let expectedIndex = 0;
+ for (let i = 0; i < commandQueue.length;) {
+ const command = (_a = commandQueue.peekAt(i)) === null || _a === void 0 ? void 0 : _a.command;
+ const pipelineIndex = command.pipelineIndex;
+ if (pipelineIndex === undefined || pipelineIndex === 0) {
+ expectedIndex = 0;
+ }
+ if (pipelineIndex !== undefined && pipelineIndex !== expectedIndex++) {
+ commandQueue.remove(i, 1);
+ command.reject(abortError(command));
+ continue;
+ }
+ i++;
+ }
+}
+// If only a partial transaction result was received before connection close,
+// we have to abort any transaction fragments that may have ended up in the
+// offline queue
+function abortTransactionFragments(commandQueue) {
+ var _a;
+ for (let i = 0; i < commandQueue.length;) {
+ const command = (_a = commandQueue.peekAt(i)) === null || _a === void 0 ? void 0 : _a.command;
+ if (command.name === "multi") {
+ break;
+ }
+ if (command.name === "exec") {
+ commandQueue.remove(i, 1);
+ command.reject(abortError(command));
+ break;
+ }
+ if (command.inTransaction) {
+ commandQueue.remove(i, 1);
+ command.reject(abortError(command));
+ }
+ else {
+ i++;
+ }
+ }
+}
+function closeHandler(self) {
+ return function () {
+ const prevStatus = self.status;
+ self.setStatus("close");
+ if (self.commandQueue.length) {
+ abortIncompletePipelines(self.commandQueue);
+ }
+ if (self.offlineQueue.length) {
+ abortTransactionFragments(self.offlineQueue);
+ }
+ if (prevStatus === "ready") {
+ if (!self.prevCondition) {
+ self.prevCondition = self.condition;
+ }
+ if (self.commandQueue.length) {
+ self.prevCommandQueue = self.commandQueue;
+ }
+ }
+ if (self.manuallyClosing) {
+ self.manuallyClosing = false;
+ debug("skip reconnecting since the connection is manually closed.");
+ return close();
+ }
+ if (typeof self.options.retryStrategy !== "function") {
+ debug("skip reconnecting because `retryStrategy` is not a function");
+ return close();
+ }
+ const retryDelay = self.options.retryStrategy(++self.retryAttempts);
+ if (typeof retryDelay !== "number") {
+ debug("skip reconnecting because `retryStrategy` doesn't return a number");
+ return close();
+ }
+ debug("reconnect in %sms", retryDelay);
+ self.setStatus("reconnecting", retryDelay);
+ self.reconnectTimeout = setTimeout(function () {
+ self.reconnectTimeout = null;
+ self.connect().catch(utils_1.noop);
+ }, retryDelay);
+ const { maxRetriesPerRequest } = self.options;
+ if (typeof maxRetriesPerRequest === "number") {
+ if (maxRetriesPerRequest < 0) {
+ debug("maxRetriesPerRequest is negative, ignoring...");
+ }
+ else {
+ const remainder = self.retryAttempts % (maxRetriesPerRequest + 1);
+ if (remainder === 0) {
+ debug("reach maxRetriesPerRequest limitation, flushing command queue...");
+ self.flushQueue(new errors_1.MaxRetriesPerRequestError(maxRetriesPerRequest));
+ }
+ }
+ }
+ };
+ function close() {
+ self.setStatus("end");
+ self.flushQueue(new Error(utils_1.CONNECTION_CLOSED_ERROR_MSG));
+ }
+}
+exports.closeHandler = closeHandler;
+function errorHandler(self) {
+ return function (error) {
+ debug("error: %s", error);
+ self.silentEmit("error", error);
+ };
+}
+exports.errorHandler = errorHandler;
+function readyHandler(self) {
+ return function () {
+ self.setStatus("ready");
+ self.retryAttempts = 0;
+ if (self.options.monitor) {
+ self.call("monitor").then(() => self.setStatus("monitoring"), (error) => self.emit("error", error));
+ const { sendCommand } = self;
+ self.sendCommand = function (command) {
+ if (Command_1.default.checkFlag("VALID_IN_MONITOR_MODE", command.name)) {
+ return sendCommand.call(self, command);
+ }
+ command.reject(new Error("Connection is in monitoring mode, can't process commands."));
+ return command.promise;
+ };
+ self.once("close", function () {
+ delete self.sendCommand;
+ });
+ return;
+ }
+ const finalSelect = self.prevCondition
+ ? self.prevCondition.select
+ : self.condition.select;
+ if (self.options.readOnly) {
+ debug("set the connection to readonly mode");
+ self.readonly().catch(utils_1.noop);
+ }
+ if (self.prevCondition) {
+ const condition = self.prevCondition;
+ self.prevCondition = null;
+ if (condition.subscriber && self.options.autoResubscribe) {
+ // We re-select the previous db first since
+ // `SELECT` command is not valid in sub mode.
+ if (self.condition.select !== finalSelect) {
+ debug("connect to db [%d]", finalSelect);
+ self.select(finalSelect);
+ }
+ const subscribeChannels = condition.subscriber.channels("subscribe");
+ if (subscribeChannels.length) {
+ debug("subscribe %d channels", subscribeChannels.length);
+ self.subscribe(subscribeChannels);
+ }
+ const psubscribeChannels = condition.subscriber.channels("psubscribe");
+ if (psubscribeChannels.length) {
+ debug("psubscribe %d channels", psubscribeChannels.length);
+ self.psubscribe(psubscribeChannels);
+ }
+ const ssubscribeChannels = condition.subscriber.channels("ssubscribe");
+ if (ssubscribeChannels.length) {
+ debug("ssubscribe %s", ssubscribeChannels.length);
+ for (const channel of ssubscribeChannels) {
+ self.ssubscribe(channel);
+ }
+ }
+ }
+ }
+ if (self.prevCommandQueue) {
+ if (self.options.autoResendUnfulfilledCommands) {
+ debug("resend %d unfulfilled commands", self.prevCommandQueue.length);
+ while (self.prevCommandQueue.length > 0) {
+ const item = self.prevCommandQueue.shift();
+ if (item.select !== self.condition.select &&
+ item.command.name !== "select") {
+ self.select(item.select);
+ }
+ self.sendCommand(item.command, item.stream);
+ }
+ }
+ else {
+ self.prevCommandQueue = null;
+ }
+ }
+ if (self.offlineQueue.length) {
+ debug("send %d commands in offline queue", self.offlineQueue.length);
+ const offlineQueue = self.offlineQueue;
+ self.resetOfflineQueue();
+ while (offlineQueue.length > 0) {
+ const item = offlineQueue.shift();
+ if (item.select !== self.condition.select &&
+ item.command.name !== "select") {
+ self.select(item.select);
+ }
+ self.sendCommand(item.command, item.stream);
+ }
+ }
+ if (self.condition.select !== finalSelect) {
+ debug("connect to db [%d]", finalSelect);
+ self.select(finalSelect);
+ }
+ };
+}
+exports.readyHandler = readyHandler;
diff --git a/backend/node_modules/ioredis/built/transaction.d.ts b/backend/node_modules/ioredis/built/transaction.d.ts
new file mode 100644
index 0000000..d499f25
--- /dev/null
+++ b/backend/node_modules/ioredis/built/transaction.d.ts
@@ -0,0 +1,13 @@
+import { ChainableCommander } from "./utils/RedisCommander";
+export interface Transaction {
+ pipeline(commands?: unknown[][]): ChainableCommander;
+ multi(options: {
+ pipeline: false;
+ }): Promise<"OK">;
+ multi(): ChainableCommander;
+ multi(options: {
+ pipeline: true;
+ }): ChainableCommander;
+ multi(commands?: unknown[][]): ChainableCommander;
+}
+export declare function addTransactionSupport(redis: any): void;
diff --git a/backend/node_modules/ioredis/built/transaction.js b/backend/node_modules/ioredis/built/transaction.js
new file mode 100644
index 0000000..468fa8f
--- /dev/null
+++ b/backend/node_modules/ioredis/built/transaction.js
@@ -0,0 +1,93 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.addTransactionSupport = void 0;
+const utils_1 = require("./utils");
+const standard_as_callback_1 = require("standard-as-callback");
+const Pipeline_1 = require("./Pipeline");
+function addTransactionSupport(redis) {
+ redis.pipeline = function (commands) {
+ const pipeline = new Pipeline_1.default(this);
+ if (Array.isArray(commands)) {
+ pipeline.addBatch(commands);
+ }
+ return pipeline;
+ };
+ const { multi } = redis;
+ redis.multi = function (commands, options) {
+ if (typeof options === "undefined" && !Array.isArray(commands)) {
+ options = commands;
+ commands = null;
+ }
+ if (options && options.pipeline === false) {
+ return multi.call(this);
+ }
+ const pipeline = new Pipeline_1.default(this);
+ // @ts-expect-error
+ pipeline.multi();
+ if (Array.isArray(commands)) {
+ pipeline.addBatch(commands);
+ }
+ const exec = pipeline.exec;
+ pipeline.exec = function (callback) {
+ // Wait for the cluster to be connected, since we need nodes information before continuing
+ if (this.isCluster && !this.redis.slots.length) {
+ if (this.redis.status === "wait")
+ this.redis.connect().catch(utils_1.noop);
+ return (0, standard_as_callback_1.default)(new Promise((resolve, reject) => {
+ this.redis.delayUntilReady((err) => {
+ if (err) {
+ reject(err);
+ return;
+ }
+ this.exec(pipeline).then(resolve, reject);
+ });
+ }), callback);
+ }
+ if (this._transactions > 0) {
+ exec.call(pipeline);
+ }
+ // Returns directly when the pipeline
+ // has been called multiple times (retries).
+ if (this.nodeifiedPromise) {
+ return exec.call(pipeline);
+ }
+ const promise = exec.call(pipeline);
+ return (0, standard_as_callback_1.default)(promise.then(function (result) {
+ const execResult = result[result.length - 1];
+ if (typeof execResult === "undefined") {
+ throw new Error("Pipeline cannot be used to send any commands when the `exec()` has been called on it.");
+ }
+ if (execResult[0]) {
+ execResult[0].previousErrors = [];
+ for (let i = 0; i < result.length - 1; ++i) {
+ if (result[i][0]) {
+ execResult[0].previousErrors.push(result[i][0]);
+ }
+ }
+ throw execResult[0];
+ }
+ return (0, utils_1.wrapMultiResult)(execResult[1]);
+ }), callback);
+ };
+ // @ts-expect-error
+ const { execBuffer } = pipeline;
+ // @ts-expect-error
+ pipeline.execBuffer = function (callback) {
+ if (this._transactions > 0) {
+ execBuffer.call(pipeline);
+ }
+ return pipeline.exec(callback);
+ };
+ return pipeline;
+ };
+ const { exec } = redis;
+ redis.exec = function (callback) {
+ return (0, standard_as_callback_1.default)(exec.call(this).then(function (results) {
+ if (Array.isArray(results)) {
+ results = (0, utils_1.wrapMultiResult)(results);
+ }
+ return results;
+ }), callback);
+ };
+}
+exports.addTransactionSupport = addTransactionSupport;
diff --git a/backend/node_modules/ioredis/built/types.d.ts b/backend/node_modules/ioredis/built/types.d.ts
new file mode 100644
index 0000000..e6d95a9
--- /dev/null
+++ b/backend/node_modules/ioredis/built/types.d.ts
@@ -0,0 +1,33 @@
+///
+import { Socket } from "net";
+import { TLSSocket } from "tls";
+export declare type Callback = (err?: Error | null, result?: T) => void;
+export declare type NetStream = Socket | TLSSocket;
+export declare type CommandParameter = string | Buffer | number | any[];
+export interface Respondable {
+ name: string;
+ args: CommandParameter[];
+ resolve(result: any): void;
+ reject(error: Error): void;
+}
+export interface PipelineWriteableStream {
+ isPipeline: true;
+ write(data: string | Buffer): unknown;
+ destination: {
+ redis: {
+ stream: NetStream;
+ };
+ };
+}
+export declare type WriteableStream = NetStream | PipelineWriteableStream;
+export interface CommandItem {
+ command: Respondable;
+ stream: WriteableStream;
+ select: number;
+}
+export interface ScanStreamOptions {
+ match?: string;
+ type?: string;
+ count?: number;
+ noValues?: boolean;
+}
diff --git a/backend/node_modules/ioredis/built/types.js b/backend/node_modules/ioredis/built/types.js
new file mode 100644
index 0000000..c8ad2e5
--- /dev/null
+++ b/backend/node_modules/ioredis/built/types.js
@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/backend/node_modules/ioredis/built/utils/Commander.d.ts b/backend/node_modules/ioredis/built/utils/Commander.d.ts
new file mode 100644
index 0000000..cbee525
--- /dev/null
+++ b/backend/node_modules/ioredis/built/utils/Commander.d.ts
@@ -0,0 +1,50 @@
+import Command from "../Command";
+import { WriteableStream } from "../types";
+import RedisCommander, { ClientContext } from "./RedisCommander";
+export interface CommanderOptions {
+ keyPrefix?: string | undefined;
+ showFriendlyErrorStack?: boolean | undefined;
+}
+declare class Commander {
+ options: CommanderOptions;
+ /**
+ * @ignore
+ */
+ scriptsSet: {};
+ /**
+ * @ignore
+ */
+ addedBuiltinSet: Set;
+ /**
+ * Return supported builtin commands
+ */
+ getBuiltinCommands(): string[];
+ /**
+ * Create a builtin command
+ */
+ createBuiltinCommand(commandName: string): {
+ string: any;
+ buffer: any;
+ };
+ /**
+ * Create add builtin command
+ */
+ addBuiltinCommand(commandName: string): void;
+ /**
+ * Define a custom command using lua script
+ */
+ defineCommand(name: string, definition: {
+ lua: string;
+ numberOfKeys?: number;
+ readOnly?: boolean;
+ }): void;
+ /**
+ * @ignore
+ */
+ sendCommand(command: Command, stream?: WriteableStream, node?: unknown): unknown;
+}
+interface Commander extends RedisCommander {
+}
+export default Commander;
diff --git a/backend/node_modules/ioredis/built/utils/Commander.js b/backend/node_modules/ioredis/built/utils/Commander.js
new file mode 100644
index 0000000..31a9155
--- /dev/null
+++ b/backend/node_modules/ioredis/built/utils/Commander.js
@@ -0,0 +1,117 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const commands_1 = require("@ioredis/commands");
+const autoPipelining_1 = require("../autoPipelining");
+const Command_1 = require("../Command");
+const Script_1 = require("../Script");
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+class Commander {
+ constructor() {
+ this.options = {};
+ /**
+ * @ignore
+ */
+ this.scriptsSet = {};
+ /**
+ * @ignore
+ */
+ this.addedBuiltinSet = new Set();
+ }
+ /**
+ * Return supported builtin commands
+ */
+ getBuiltinCommands() {
+ return commands.slice(0);
+ }
+ /**
+ * Create a builtin command
+ */
+ createBuiltinCommand(commandName) {
+ return {
+ string: generateFunction(null, commandName, "utf8"),
+ buffer: generateFunction(null, commandName, null),
+ };
+ }
+ /**
+ * Create add builtin command
+ */
+ addBuiltinCommand(commandName) {
+ this.addedBuiltinSet.add(commandName);
+ this[commandName] = generateFunction(commandName, commandName, "utf8");
+ this[commandName + "Buffer"] = generateFunction(commandName + "Buffer", commandName, null);
+ }
+ /**
+ * Define a custom command using lua script
+ */
+ defineCommand(name, definition) {
+ const script = new Script_1.default(definition.lua, definition.numberOfKeys, this.options.keyPrefix, definition.readOnly);
+ this.scriptsSet[name] = script;
+ this[name] = generateScriptingFunction(name, name, script, "utf8");
+ this[name + "Buffer"] = generateScriptingFunction(name + "Buffer", name, script, null);
+ }
+ /**
+ * @ignore
+ */
+ sendCommand(command, stream, node) {
+ throw new Error('"sendCommand" is not implemented');
+ }
+}
+const commands = commands_1.list.filter((command) => command !== "monitor");
+commands.push("sentinel");
+commands.forEach(function (commandName) {
+ Commander.prototype[commandName] = generateFunction(commandName, commandName, "utf8");
+ Commander.prototype[commandName + "Buffer"] = generateFunction(commandName + "Buffer", commandName, null);
+});
+Commander.prototype.call = generateFunction("call", "utf8");
+Commander.prototype.callBuffer = generateFunction("callBuffer", null);
+// @ts-expect-error
+Commander.prototype.send_command = Commander.prototype.call;
+function generateFunction(functionName, _commandName, _encoding) {
+ if (typeof _encoding === "undefined") {
+ _encoding = _commandName;
+ _commandName = null;
+ }
+ return function (...args) {
+ const commandName = (_commandName || args.shift());
+ let callback = args[args.length - 1];
+ if (typeof callback === "function") {
+ args.pop();
+ }
+ else {
+ callback = undefined;
+ }
+ const options = {
+ errorStack: this.options.showFriendlyErrorStack ? new Error() : undefined,
+ keyPrefix: this.options.keyPrefix,
+ replyEncoding: _encoding,
+ };
+ // No auto pipeline, use regular command sending
+ if (!(0, autoPipelining_1.shouldUseAutoPipelining)(this, functionName, commandName)) {
+ return this.sendCommand(
+ // @ts-expect-error
+ new Command_1.default(commandName, args, options, callback));
+ }
+ // Create a new pipeline and make sure it's scheduled
+ return (0, autoPipelining_1.executeWithAutoPipelining)(this, functionName, commandName,
+ // @ts-expect-error
+ args, callback);
+ };
+}
+function generateScriptingFunction(functionName, commandName, script, encoding) {
+ return function (...args) {
+ const callback = typeof args[args.length - 1] === "function" ? args.pop() : undefined;
+ const options = {
+ replyEncoding: encoding,
+ };
+ if (this.options.showFriendlyErrorStack) {
+ options.errorStack = new Error();
+ }
+ // No auto pipeline, use regular command sending
+ if (!(0, autoPipelining_1.shouldUseAutoPipelining)(this, functionName, commandName)) {
+ return script.execute(this, args, options, callback);
+ }
+ // Create a new pipeline and make sure it's scheduled
+ return (0, autoPipelining_1.executeWithAutoPipelining)(this, functionName, commandName, args, callback);
+ };
+}
+exports.default = Commander;
diff --git a/backend/node_modules/ioredis/built/utils/RedisCommander.d.ts b/backend/node_modules/ioredis/built/utils/RedisCommander.d.ts
new file mode 100644
index 0000000..4074af3
--- /dev/null
+++ b/backend/node_modules/ioredis/built/utils/RedisCommander.d.ts
@@ -0,0 +1,8950 @@
+/**
+ * This file is generated by @ioredis/interface-generator.
+ * Don't edit it manually. Instead, run `npm run generate` to update
+ * this file.
+ */
+///
+import { Callback } from "../types";
+export declare type RedisKey = string | Buffer;
+export declare type RedisValue = string | Buffer | number;
+export interface ResultTypes {
+ default: Promise;
+ pipeline: ChainableCommander;
+}
+export interface ChainableCommander extends RedisCommander<{
+ type: "pipeline";
+}> {
+ length: number;
+}
+export declare type ClientContext = {
+ type: keyof ResultTypes;
+};
+export declare type Result = ResultTypes[Context["type"]];
+interface RedisCommander {
+ /**
+ * Call arbitrary commands.
+ *
+ * `redis.call('set', 'foo', 'bar')` is the same as `redis.set('foo', 'bar')`,
+ * so the only case you need to use this method is when the command is not
+ * supported by ioredis.
+ *
+ * ```ts
+ * redis.call('set', 'foo', 'bar');
+ * redis.call('get', 'foo', (err, value) => {
+ * // value === 'bar'
+ * });
+ * ```
+ */
+ call(command: string, callback?: Callback): Result;
+ call(command: string, args: (string | Buffer | number)[], callback?: Callback): Result;
+ call(...args: [
+ command: string,
+ ...args: (string | Buffer | number)[],
+ callback: Callback
+ ]): Result;
+ call(...args: [command: string, ...args: (string | Buffer | number)[]]): Result;
+ callBuffer(command: string, callback?: Callback): Result;
+ callBuffer(command: string, args: (string | Buffer | number)[], callback?: Callback): Result;
+ callBuffer(...args: [
+ command: string,
+ ...args: (string | Buffer | number)[],
+ callback: Callback
+ ]): Result;
+ callBuffer(...args: [command: string, ...args: (string | Buffer | number)[]]): Result;
+ /**
+ * List the ACL categories or the commands inside a category
+ * - _group_: server
+ * - _complexity_: O(1) since the categories and commands are a fixed set.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "CAT", callback?: Callback): Result;
+ acl(subcommand: "CAT", categoryname: string | Buffer, callback?: Callback): Result;
+ /**
+ * Remove the specified ACL users and the associated rules
+ * - _group_: server
+ * - _complexity_: O(1) amortized time considering the typical user.
+ * - _since_: 6.0.0
+ */
+ acl(...args: [
+ subcommand: "DELUSER",
+ ...usernames: (string | Buffer)[],
+ callback: Callback
+ ]): Result;
+ acl(...args: [subcommand: "DELUSER", ...usernames: (string | Buffer)[]]): Result;
+ /**
+ * Returns whether the user can execute the given command without executing the command.
+ * - _group_: server
+ * - _complexity_: O(1).
+ * - _since_: 7.0.0
+ */
+ acl(subcommand: "DRYRUN", username: string | Buffer, command: string | Buffer, callback?: Callback): Result;
+ aclBuffer(subcommand: "DRYRUN", username: string | Buffer, command: string | Buffer, callback?: Callback): Result;
+ acl(...args: [
+ subcommand: "DRYRUN",
+ username: string | Buffer,
+ command: string | Buffer,
+ ...args: (string | Buffer | number)[],
+ callback: Callback
+ ]): Result;
+ aclBuffer(...args: [
+ subcommand: "DRYRUN",
+ username: string | Buffer,
+ command: string | Buffer,
+ ...args: (string | Buffer | number)[],
+ callback: Callback
+ ]): Result;
+ acl(...args: [
+ subcommand: "DRYRUN",
+ username: string | Buffer,
+ command: string | Buffer,
+ ...args: (string | Buffer | number)[]
+ ]): Result;
+ aclBuffer(...args: [
+ subcommand: "DRYRUN",
+ username: string | Buffer,
+ command: string | Buffer,
+ ...args: (string | Buffer | number)[]
+ ]): Result;
+ /**
+ * Generate a pseudorandom secure password to use for ACL users
+ * - _group_: server
+ * - _complexity_: O(1)
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "GENPASS", callback?: Callback): Result;
+ aclBuffer(subcommand: "GENPASS", callback?: Callback): Result;
+ acl(subcommand: "GENPASS", bits: number | string, callback?: Callback): Result;
+ aclBuffer(subcommand: "GENPASS", bits: number | string, callback?: Callback): Result;
+ /**
+ * Get the rules for a specific ACL user
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of password, command and pattern rules that the user has.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "GETUSER", username: string | Buffer, callback?: Callback): Result;
+ aclBuffer(subcommand: "GETUSER", username: string | Buffer, callback?: Callback): Result;
+ /**
+ * Show helpful text about the different subcommands
+ * - _group_: server
+ * - _complexity_: O(1)
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "HELP", callback?: Callback): Result;
+ /**
+ * List the current ACL rules in ACL config file format
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of configured users.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "LIST", callback?: Callback): Result;
+ aclBuffer(subcommand: "LIST", callback?: Callback): Result;
+ /**
+ * Reload the ACLs from the configured ACL file
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of configured users.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "LOAD", callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * List latest events denied because of ACLs in place
+ * - _group_: server
+ * - _complexity_: O(N) with N being the number of entries shown.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "LOG", callback?: Callback): Result;
+ acl(subcommand: "LOG", count: number | string, callback?: Callback): Result;
+ acl(subcommand: "LOG", reset: "RESET", callback?: Callback): Result;
+ /**
+ * Save the current ACL rules in the configured ACL file
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of configured users.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "SAVE", callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * Modify or create the rules for a specific ACL user
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of rules provided.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "SETUSER", username: string | Buffer, callback?: Callback<"OK">): Result<"OK", Context>;
+ acl(...args: [
+ subcommand: "SETUSER",
+ username: string | Buffer,
+ ...rules: (string | Buffer)[],
+ callback: Callback<"OK">
+ ]): Result<"OK", Context>;
+ acl(...args: [
+ subcommand: "SETUSER",
+ username: string | Buffer,
+ ...rules: (string | Buffer)[]
+ ]): Result<"OK", Context>;
+ /**
+ * List the username of all the configured ACL rules
+ * - _group_: server
+ * - _complexity_: O(N). Where N is the number of configured users.
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "USERS", callback?: Callback): Result;
+ aclBuffer(subcommand: "USERS", callback?: Callback): Result;
+ /**
+ * Return the name of the user associated to the current connection
+ * - _group_: server
+ * - _complexity_: O(1)
+ * - _since_: 6.0.0
+ */
+ acl(subcommand: "WHOAMI", callback?: Callback): Result;
+ aclBuffer(subcommand: "WHOAMI", callback?: Callback): Result;
+ /**
+ * Append a value to a key
+ * - _group_: string
+ * - _complexity_: O(1). The amortized time complexity is O(1) assuming the appended value is small and the already present value is of any size, since the dynamic string library used by Redis will double the free space available on every reallocation.
+ * - _since_: 2.0.0
+ */
+ append(key: RedisKey, value: string | Buffer | number, callback?: Callback): Result;
+ /**
+ * Sent by cluster clients after an -ASK redirect
+ * - _group_: cluster
+ * - _complexity_: O(1)
+ * - _since_: 3.0.0
+ */
+ asking(callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * Authenticate to the server
+ * - _group_: connection
+ * - _complexity_: O(N) where N is the number of passwords defined for the user
+ * - _since_: 1.0.0
+ */
+ auth(password: string | Buffer, callback?: Callback<"OK">): Result<"OK", Context>;
+ auth(username: string | Buffer, password: string | Buffer, callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * Asynchronously rewrite the append-only file
+ * - _group_: server
+ * - _complexity_: O(1)
+ * - _since_: 1.0.0
+ */
+ bgrewriteaof(callback?: Callback): Result;
+ bgrewriteaofBuffer(callback?: Callback): Result;
+ /**
+ * Asynchronously save the dataset to disk
+ * - _group_: server
+ * - _complexity_: O(1)
+ * - _since_: 1.0.0
+ */
+ bgsave(callback?: Callback<"OK">): Result<"OK", Context>;
+ bgsave(schedule: "SCHEDULE", callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * Count set bits in a string
+ * - _group_: bitmap
+ * - _complexity_: O(N)
+ * - _since_: 2.6.0
+ */
+ bitcount(key: RedisKey, callback?: Callback): Result;
+ bitcount(key: RedisKey, start: number | string, end: number | string, callback?: Callback): Result;
+ bitcount(key: RedisKey, start: number | string, end: number | string, byte: "BYTE", callback?: Callback): Result;
+ bitcount(key: RedisKey, start: number | string, end: number | string, bit: "BIT", callback?: Callback): Result;
+ /**
+ * Perform arbitrary bitfield integer operations on strings
+ * - _group_: bitmap
+ * - _complexity_: O(1) for each subcommand specified
+ * - _since_: 3.2.0
+ */
+ bitfield(key: RedisKey, encodingOffsetToken: "GET", encoding: string | Buffer, offset: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, encodingOffsetValueToken: "SET", encoding: string | Buffer, offset: number | string, value: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, encodingOffsetIncrementToken: "INCRBY", encoding: string | Buffer, offset: number | string, increment: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", wrap: "WRAP", encodingOffsetValueToken: "SET", encoding: string | Buffer, offset: number | string, value: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", wrap: "WRAP", encodingOffsetIncrementToken: "INCRBY", encoding: string | Buffer, offset: number | string, increment: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", sat: "SAT", encodingOffsetValueToken: "SET", encoding: string | Buffer, offset: number | string, value: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", sat: "SAT", encodingOffsetIncrementToken: "INCRBY", encoding: string | Buffer, offset: number | string, increment: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", fail: "FAIL", encodingOffsetValueToken: "SET", encoding: string | Buffer, offset: number | string, value: number | string, callback?: Callback): Result;
+ bitfield(key: RedisKey, overflow: "OVERFLOW", fail: "FAIL", encodingOffsetIncrementToken: "INCRBY", encoding: string | Buffer, offset: number | string, increment: number | string, callback?: Callback): Result;
+ /**
+ * Perform arbitrary bitfield integer operations on strings. Read-only variant of BITFIELD
+ * - _group_: bitmap
+ * - _complexity_: O(1) for each subcommand specified
+ * - _since_: 6.0.0
+ */
+ bitfield_ro(...args: [
+ key: RedisKey,
+ encodingOffsetToken: "GET",
+ ...encodingOffsets: (string | Buffer | number)[],
+ callback: Callback
+ ]): Result;
+ bitfield_ro(...args: [
+ key: RedisKey,
+ encodingOffsetToken: "GET",
+ ...encodingOffsets: (string | Buffer | number)[]
+ ]): Result;
+ /**
+ * Perform bitwise operations between strings
+ * - _group_: bitmap
+ * - _complexity_: O(N)
+ * - _since_: 2.6.0
+ */
+ bitop(...args: [
+ operation: string | Buffer,
+ destkey: RedisKey,
+ ...keys: RedisKey[],
+ callback: Callback
+ ]): Result;
+ bitop(...args: [
+ operation: string | Buffer,
+ destkey: RedisKey,
+ keys: RedisKey[],
+ callback: Callback
+ ]): Result;
+ bitop(...args: [
+ operation: string | Buffer,
+ destkey: RedisKey,
+ ...keys: RedisKey[]
+ ]): Result;
+ bitop(...args: [operation: string | Buffer, destkey: RedisKey, keys: RedisKey[]]): Result;
+ /**
+ * Find first bit set or clear in a string
+ * - _group_: bitmap
+ * - _complexity_: O(N)
+ * - _since_: 2.8.7
+ */
+ bitpos(key: RedisKey, bit: number | string, callback?: Callback): Result;
+ bitpos(key: RedisKey, bit: number | string, start: number | string, callback?: Callback): Result;
+ bitpos(key: RedisKey, bit: number | string, start: number | string, end: number | string, callback?: Callback): Result;
+ bitpos(key: RedisKey, bit: number | string, start: number | string, end: number | string, byte: "BYTE", callback?: Callback): Result;
+ bitpos(key: RedisKey, bit: number | string, start: number | string, end: number | string, bit1: "BIT", callback?: Callback): Result;
+ /**
+ * Pop an element from a list, push it to another list and return it; or block until one is available
+ * - _group_: list
+ * - _complexity_: O(1)
+ * - _since_: 6.2.0
+ */
+ blmove(source: RedisKey, destination: RedisKey, left: "LEFT", left1: "LEFT", timeout: number | string, callback?: Callback): Result;
+ blmoveBuffer(source: RedisKey, destination: RedisKey, left: "LEFT", left1: "LEFT", timeout: number | string, callback?: Callback): Result;
+ blmove(source: RedisKey, destination: RedisKey, left: "LEFT", right: "RIGHT", timeout: number | string, callback?: Callback): Result;
+ blmoveBuffer(source: RedisKey, destination: RedisKey, left: "LEFT", right: "RIGHT", timeout: number | string, callback?: Callback): Result;
+ blmove(source: RedisKey, destination: RedisKey, right: "RIGHT", left: "LEFT", timeout: number | string, callback?: Callback): Result;
+ blmoveBuffer(source: RedisKey, destination: RedisKey, right: "RIGHT", left: "LEFT", timeout: number | string, callback?: Callback): Result;
+ blmove(source: RedisKey, destination: RedisKey, right: "RIGHT", right1: "RIGHT", timeout: number | string, callback?: Callback): Result;
+ blmoveBuffer(source: RedisKey, destination: RedisKey, right: "RIGHT", right1: "RIGHT", timeout: number | string, callback?: Callback): Result;
+ /**
+ * Pop elements from a list, or block until one is available
+ * - _group_: list
+ * - _complexity_: O(N+M) where N is the number of provided keys and M is the number of elements returned.
+ * - _since_: 7.0.0
+ */
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT"
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT"
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT"
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT"
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ left: "LEFT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT"
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT"
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT"
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT"
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: string, members: string[]] | null>
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback<[key: Buffer, members: Buffer[]] | null>
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ blmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: string, members: string[]] | null, Context>;
+ blmpopBuffer(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ right: "RIGHT",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result<[key: Buffer, members: Buffer[]] | null, Context>;
+ /**
+ * Remove and get the first element in a list, or block until one is available
+ * - _group_: list
+ * - _complexity_: O(N) where N is the number of provided keys.
+ * - _since_: 2.0.0
+ */
+ blpop(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[string, string] | null>
+ ]): Result<[string, string] | null, Context>;
+ blpopBuffer(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[Buffer, Buffer] | null>
+ ]): Result<[Buffer, Buffer] | null, Context>;
+ blpop(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[string, string] | null>
+ ]): Result<[string, string] | null, Context>;
+ blpopBuffer(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[Buffer, Buffer] | null>
+ ]): Result<[Buffer, Buffer] | null, Context>;
+ blpop(...args: [...keys: RedisKey[], timeout: number | string]): Result<[string, string] | null, Context>;
+ blpopBuffer(...args: [...keys: RedisKey[], timeout: number | string]): Result<[Buffer, Buffer] | null, Context>;
+ blpop(...args: [keys: RedisKey[], timeout: number | string]): Result<[string, string] | null, Context>;
+ blpopBuffer(...args: [keys: RedisKey[], timeout: number | string]): Result<[Buffer, Buffer] | null, Context>;
+ /**
+ * Remove and get the last element in a list, or block until one is available
+ * - _group_: list
+ * - _complexity_: O(N) where N is the number of provided keys.
+ * - _since_: 2.0.0
+ */
+ brpop(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[string, string] | null>
+ ]): Result<[string, string] | null, Context>;
+ brpopBuffer(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[Buffer, Buffer] | null>
+ ]): Result<[Buffer, Buffer] | null, Context>;
+ brpop(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[string, string] | null>
+ ]): Result<[string, string] | null, Context>;
+ brpopBuffer(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[Buffer, Buffer] | null>
+ ]): Result<[Buffer, Buffer] | null, Context>;
+ brpop(...args: [...keys: RedisKey[], timeout: number | string]): Result<[string, string] | null, Context>;
+ brpopBuffer(...args: [...keys: RedisKey[], timeout: number | string]): Result<[Buffer, Buffer] | null, Context>;
+ brpop(...args: [keys: RedisKey[], timeout: number | string]): Result<[string, string] | null, Context>;
+ brpopBuffer(...args: [keys: RedisKey[], timeout: number | string]): Result<[Buffer, Buffer] | null, Context>;
+ /**
+ * Pop an element from a list, push it to another list and return it; or block until one is available
+ * - _group_: list
+ * - _complexity_: O(1)
+ * - _since_: 2.2.0
+ */
+ brpoplpush(source: RedisKey, destination: RedisKey, timeout: number | string, callback?: Callback): Result;
+ brpoplpushBuffer(source: RedisKey, destination: RedisKey, timeout: number | string, callback?: Callback): Result;
+ /**
+ * Remove and return members with scores in a sorted set or block until one is available
+ * - _group_: sorted-set
+ * - _complexity_: O(K) + O(N*log(M)) where K is the number of provided keys, N being the number of elements in the sorted set, and M being the number of elements popped.
+ * - _since_: 7.0.0
+ */
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ min: "MIN",
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ min: "MIN",
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ min: "MIN"
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ min: "MIN"
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ min: "MIN",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ min: "MIN",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ min: "MIN",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ min: "MIN",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ max: "MAX",
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ max: "MAX",
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ max: "MAX"
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ max: "MAX"
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ max: "MAX",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ max: "MAX",
+ countToken: "COUNT",
+ count: number | string,
+ callback: Callback
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ ...keys: RedisKey[],
+ max: "MAX",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result;
+ bzmpop(...args: [
+ timeout: number | string,
+ numkeys: number | string,
+ keys: RedisKey[],
+ max: "MAX",
+ countToken: "COUNT",
+ count: number | string
+ ]): Result;
+ /**
+ * Remove and return the member with the highest score from one or more sorted sets, or block until one is available
+ * - _group_: sorted-set
+ * - _complexity_: O(log(N)) with N being the number of elements in the sorted set.
+ * - _since_: 5.0.0
+ */
+ bzpopmax(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: string, member: string, score: string] | null>
+ ]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopmaxBuffer(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: Buffer, member: Buffer, score: Buffer] | null>
+ ]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmax(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: string, member: string, score: string] | null>
+ ]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopmaxBuffer(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: Buffer, member: Buffer, score: Buffer] | null>
+ ]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmax(...args: [...keys: RedisKey[], timeout: number | string]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopmaxBuffer(...args: [...keys: RedisKey[], timeout: number | string]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmax(...args: [keys: RedisKey[], timeout: number | string]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopmaxBuffer(...args: [keys: RedisKey[], timeout: number | string]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ /**
+ * Remove and return the member with the lowest score from one or more sorted sets, or block until one is available
+ * - _group_: sorted-set
+ * - _complexity_: O(log(N)) with N being the number of elements in the sorted set.
+ * - _since_: 5.0.0
+ */
+ bzpopmin(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: string, member: string, score: string] | null>
+ ]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopminBuffer(...args: [
+ ...keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: Buffer, member: Buffer, score: Buffer] | null>
+ ]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmin(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: string, member: string, score: string] | null>
+ ]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopminBuffer(...args: [
+ keys: RedisKey[],
+ timeout: number | string,
+ callback: Callback<[key: Buffer, member: Buffer, score: Buffer] | null>
+ ]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmin(...args: [...keys: RedisKey[], timeout: number | string]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopminBuffer(...args: [...keys: RedisKey[], timeout: number | string]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ bzpopmin(...args: [keys: RedisKey[], timeout: number | string]): Result<[key: string, member: string, score: string] | null, Context>;
+ bzpopminBuffer(...args: [keys: RedisKey[], timeout: number | string]): Result<[key: Buffer, member: Buffer, score: Buffer] | null, Context>;
+ /**
+ * Instruct the server about tracking or not keys in the next request
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 6.0.0
+ */
+ client(subcommand: "CACHING", yes: "YES", callback?: Callback<"OK">): Result<"OK", Context>;
+ client(subcommand: "CACHING", no: "NO", callback?: Callback<"OK">): Result<"OK", Context>;
+ /**
+ * Get the current connection name
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 2.6.9
+ */
+ client(subcommand: "GETNAME", callback?: Callback): Result;
+ clientBuffer(subcommand: "GETNAME", callback?: Callback): Result;
+ /**
+ * Get tracking notifications redirection client ID if any
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 6.0.0
+ */
+ client(subcommand: "GETREDIR", callback?: Callback): Result;
+ /**
+ * Show helpful text about the different subcommands
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 5.0.0
+ */
+ client(subcommand: "HELP", callback?: Callback): Result;
+ /**
+ * Returns the client ID for the current connection
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 5.0.0
+ */
+ client(subcommand: "ID", callback?: Callback): Result;
+ /**
+ * Returns information about the current client connection.
+ * - _group_: connection
+ * - _complexity_: O(1)
+ * - _since_: 6.2.0
+ */
+ client(subcommand: "INFO", callback?: Callback): Result;
+ clientBuffer(subcommand: "INFO", callback?: Callback): Result;
+ /**
+ * Kill the connection of a client
+ * - _group_: connection
+ * - _complexity_: O(N) where N is the number of client connections
+ * - _since_: 2.4.0
+ */
+ client(...args: [
+ subcommand: "KILL",
+ ...args: RedisValue[],
+ callback: Callback
+ ]): Result;
+ client(...args: [subcommand: "KILL", ...args: RedisValue[]]): Result;
+ /**
+ * Get the list of client connections
+ * - _group_: connection
+ * - _complexity_: O(N) where N is the number of client connections
+ * - _since_: 2.4.0
+ */
+ client(subcommand: "LIST", callback?: Callback): Result;
+ client(...args: [
+ subcommand: "LIST",
+ idToken: "ID",
+ ...clientIds: (number | string)[],
+ callback: Callback
+ ]): Result;
+ client(...args: [
+ subcommand: "LIST",
+ idToken: "ID",
+ ...clientIds: (number | string)[]
+ ]): Result;
+ client(subcommand: "LIST", type: "TYPE", normal: "NORMAL", callback?: Callback): Result;
+ client(...args: [
+ subcommand: "LIST",
+ type: "TYPE",
+ normal: "NORMAL",
+ idToken: "ID",
+ ...clientIds: (number | string)[],
+ callback: Callback
+ ]): Result;
+ client(...args: [
+ subcommand: "LIST",
+ type: "TYPE",
+ normal: "NORMAL",
+ idToken: "ID",
+ ...clientIds: (number | string)[]
+ ]): Result;
+ client(subcommand: "LIST", type: "TYPE", master: "MASTER", callback?: Callback): Result;
+ client(...args: [
+ subcommand: "LIST",
+ type: "TYPE",
+ master: "MASTER",
+ idToken: "ID",
+ ...clientIds: (number | string)[],
+ callback: Callback
+ ]): Result;
+ client(...args: [
+ subcommand: "LIST",
+ type: "TYPE",
+ master: "MASTER",
+ idToken: "ID",
+ ...clientIds: (number | string)[]
+ ]): Result;
+ client(subcommand: "LIST", type: "TYPE", replica: "REPLICA", callback?: Callback): Result
+
+# Redis Key Slot Calculator
+
+A high performance redis cluster key slot calculator for node redis clients e.g. [node_redis](https://github.com/NodeRedis/node_redis), [ioredis](https://github.com/luin/ioredis) and [redis-clustr](https://github.com/gosquared/redis-clustr/).
+
+This also handles key tags such as `somekey{actualTag}`.
+
+## Install
+
+Install with [NPM](https://npmjs.org/):
+
+```
+npm install cluster-key-slot --save
+```
+
+## Usage
+
+```js
+const calculateSlot = require('cluster-key-slot');
+const calculateMultipleSlots = require('cluster-key-slot').generateMulti;
+
+// ...
+
+// a single slot number
+const slot = calculateSlot('test:key:{butOnlyThis}redis');
+// Buffer is also supported
+const anotherSlot = calculateSlot(Buffer.from([0x7b, 0x7d, 0x2a]));
+
+// multiple keys - multi returns a single key slot number, returns -1 if any
+// of the keys does not match the base slot number (base is defaulted to first keys slot)
+// This is useful to quickly determine a singe slot for multi keys operations.
+const slotForRedisMulti = calculateMultipleSlots([
+ 'test:key:{butOnlyThis}redis',
+ 'something:key45:{butOnlyThis}hello',
+ 'example:key46:{butOnlyThis}foobar',
+]);
+```
+
+## Benchmarks
+
+`OLD` in these benchmarks refers to the `ioredis` crc calc and many of the other calculators that use `Buffer`.
+
+```text
+node -v ✔ 16.38G RAM 10:29:07
+v10.15.3
+
+NEW tags x 721,445 ops/sec ±0.44% (90 runs sampled)
+OLD tags x 566,777 ops/sec ±0.97% (96 runs sampled)
+NEW without tags x 2,054,845 ops/sec ±1.77% (92 runs sampled)
+OLD without tags x 865,839 ops/sec ±0.43% (96 runs sampled)
+NEW without tags singular x 6,354,097 ops/sec ±1.25% (94 runs sampled)
+OLD without tags singular x 4,012,250 ops/sec ±0.96% (94 runs sampled)
+NEW tags (Buffer) x 552,346 ops/sec ±1.35% (92 runs sampled)
+```
+
diff --git a/backend/node_modules/cluster-key-slot/index.d.ts b/backend/node_modules/cluster-key-slot/index.d.ts
new file mode 100644
index 0000000..1713b44
--- /dev/null
+++ b/backend/node_modules/cluster-key-slot/index.d.ts
@@ -0,0 +1,10 @@
+declare module 'cluster-key-slot' {
+ // Convert a string or Buffer into a redis slot hash.
+ function calculate(value: string | Buffer): number;
+
+ // Convert an array of multiple strings or Buffers into a redis slot hash.
+ // Returns -1 if one of the keys is not for the same slot as the others
+ export function generateMulti(values: Array