redis basic learning in the node

redis application scenarios

 

redis usage

After installing the configuration environment variables

Open redis instructions: redis-server

Redis connection requires two middleware

$ npm i koa-generic-session koa-redis --save

In the introduction app.js

//引入redis处理中间件
const session = require('koa-generic-session')
const Redis = require('koa-redis')

The session is connected into redis

//app.keys=设置签名密钥（用于cookie和session）
app.keys=['keys','keyskeys']
app.use(session({//将session连接到redis
    store:new Redis()//默认执行本机端口
}))

Set session

 //设置session
    ctx.session.count++

The default results

Of course, you can also customize session settings Property Name

View data stored in redis

Open redis client: redis-cli

View all content stored in the key: keys *

View the content corresponding to the content key: get a specific key value

In operation node directly redis

//引入redis操作
const Redis = require('koa-redis')

//连接redis的客户端服务
const Store = new Redis().client

//直接操作redis
router.get('/fix',async (ctx)=>{
    const st = await Store.hset('fix','name',Math.random())//往redis中存值 获取redis中的内容 hget fix name
    ctx.body={
        code:0
    }
})