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@tictactrip/axios-redis

v4.0.0

Published

Axios Redis cache middleware

Downloads

2,808

Readme

axios-redis

Coverage Build Status License PRs Welcome

Description

This repository provides a smart and powerful Axios Redis cache adapter. Cached data is compressed with zlib and Brotli.

Install

yarn add @tictactrip/axios-redis

Example

import * as redis from 'redis';
import axios from 'axios';
import { AxiosRedis } from '@tictactrip/axios-redis';

// Redis connexion
const redis = redisClient.createClient({ host: 'localhost' });

// Create your AxiosRedis instance (config parameter is optional)
const axiosRedis = new AxiosRedis(redis, {
  expirationInMS: 30000,
  separator: '___',
  prefix: '@tictactrip/axios-redis',
  axiosConfigPaths: ['method', 'url', 'params', 'data'],
});

// Create your Axios instance
const axiosInstance = axios.create({
  baseURL: 'http://api.example.com',
  adapter: (config) => AxiosRedis.ADAPTER(config, axiosRedis),
});

// Response will be cached on first call
await axiosInstance.get('/user?ID=12345');

// On second call, if response is still cached, adapter returns cached response without sending the request
await axiosInstance.get('/user?ID=12345');

HTTP methods cached

As default, all GET and POST responses are cached. If you want to customize them, you can also do:

axiosRedis.methodsToCache = [EHttpMethod.GET];

Key structure

By default, redis keys follow this pattern

{prefix}___{http_method}___{axios_config_url}___base64{axios_config_params}___base64{axios_config_data}

Example:

@scope/[email protected]___["post"]___WyIvZXhhbXBsZTE/cGFyYW0xPXRydWUmcGFyYW0yPTEyMyJd___W10=___WyJ7XCJoZWxsb1wiOlwid29ybGRcIn0iXQ==

If you want to customize the keys, you just need to customize your AxiosRedis instance.

Disable cache for one request

// This request won't be cached
await axiosInstance.get('/user?ID=12345', { 
  headers: {
    'Axios-Redis-Cache-Duration': null,
  },
});

Customize cache duration for one request

// This request will be cached during 90000ms
await axiosInstance.get('/user?ID=12345', { 
  headers: {
    'Axios-Redis-Cache-Duration': 90000,
  },
});

Tests

How can I mock Redis connection with Jest in my unit tests?

import * as redis from 'redis';
import { AxiosRedis } from '@tictactrip/axios-redis';

describe('Example', () => {
  it('should send the request without a redis connection', () => {
    const redisClient = redis.createClient({ retry_strategy: jest.fn() });

    const axiosRedisSpy = jest.spyOn(AxiosRedis.prototype, 'getCache')
      .mockRejectedValue(new Error('Bypass Redis for tests'));
      
    // ...
  });
});

Scripts

Run using yarn run <script> command.

clean       - Remove temporarily folders.
build       - Compile source files.
build:watch - Interactive watch mode, compile sources on change.
lint        - Lint source files.
lint:fix    - Fix lint source files.
test        - Runs all tests with coverage.

License

GPL-3.0 © Tictactrip