Redis
安装Redis
本文仅以window系统作为演示, 其他系统安装过程这里不再綑述, 各位看官可查阅: 菜鸟教程-Redis
首先, 下载redis zip包, 下载地址: https://github.com/MSOpenTech/redis/releases。
本文下载包名为: Redis-x64-3.0.504.zip, 下载好后, 解压到合适的位置, 这里我解压到: E:\Redis-x64 目录下, 并将E:\Redis-x64配置到系统的环境变量中.
打开cmd.exe, 输入指令: redis-server, 输出结果可能如下:
C:\Users\James>redis-server
[3112] 06 Jul 21:28:25.996 # Warning: no config file specified, using the defaul
t config. In order to specify a config file use redis-server /path/to/redis.conf
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.504 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 3112
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
[3112] 06 Jul 21:28:26.009 # Server started, Redis version 3.0.504
[3112] 06 Jul 21:28:26.010 * The server is now ready to accept connections on po
rt 6379
再打开另一个cmd.exe, 输入: redis-cli以启动客户端验证redis-server是否可连接.
输出结果可能如下:
C:\Users\James>redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379>
此时, 即表示Redis已安装成功, 可以在本地进行开发调试了.
Koa中使用redis
安装依赖
npm install koa redis koa-redis koa-generic-session
或者
yarn add koa redis koa-redis koa-generic-session
使用示例
const session = require('koa-generic-session');
const redisStore = require('koa-redis');
const koa = require('koa');
const Router = require('koa-router')
var app = new koa(); // for koa v1 use `var app = koa();`
app.keys = ['keys', 'keykeys'];
app.use(session({
store: redisStore()
}));
const router = new Router();
const port = 3000
const hostName = '127.0.0.1'
router.get('/', async (ctx, next) => {
var session = ctx.session;
console.log(ctx)
console.log(session)
session.count = session.count || 0;
session.count++;
ctx.body = session.count;
})
router.get('/remove', async (ctx, next) => {
ctx.session = null;
ctx.body = 0;
})
router.get('/regenerate', async (ctx, next) => {
await ctx.regenerateSession();
ctx.body = 'had regenerate session'
})
app
.use(router.routes())
.use(router.allowedMethods());
app.listen(port, hostName);
console.log(`http://${hostName}:${port}`)