NestJS的缓存模块天生支持Redis等缓存机制。以下通过一个示例,说明如何在NestJS中操作Redis。步骤如下:
先安装运行Redis服务,步骤参见链接
新建nestjs项目:
nest new [项目名称]
安装cache相关依赖
npm install cache-manager npm install -D @types/cache-manager npm install cache-manager-redis-store --save
注册Redis Store
打开src->app.module.ts,这里假设已经在本地安装启动了Redis服务
import { Module, CacheModule } from '@nestjs/common'; import * as redisStore from 'cache-manager-redis-store'; imports: [ CacheModule.register({ store: redisStore, host: 'localhost', port: 6379, }), ],
打开src->app.controller.ts, 使用Redis缓存服务
import { Controller, Get, Res, Req, Inject, CACHE_MANAGER, } from '@nestjs/common'; import { Cache } from 'cache-manager'; fakeString = 'Hello World!'; @Get('cache-test') async setGetSimpleString() { const value = await this.cacheManager.get('my-string'); if (value) { return { data: value, loadsFrom: 'redis cache', }; } await this.cacheManager.set('my-string', this.fakeString, { ttl: 20 }); return { data: this.fakeString, loadsFrom: 'fake database', }; }
最后,访问接口,打开Redis客户端工具RedisNav,验证结果:
参考:
https://www.learmoreseekmore.com/2020/12/nestjs-redis-cache.html