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