node.js学习笔记(5)

基本使用

开启服务(windows下): redis-server.exe redis.windows.conf 连接客户端: redis-cli.exe(默认地址和端口) –redis-cli.exe -h 127.0.0.1 -p 6379

查看所有的键: keys * 插入一条: set test 1 获取一条:get test

node.js中的应用

var redis = require('redis'); var client = redis.createClient(6379,'localhost'); client.set('hello','This is a test nodeJS redis'); client.get('hello',function(err,v){ console.log('hello:',v); });

需要安装redis模块 npm install redis

list: 不去重

rpush:右插入,rpush('testList','a'); lpush:左插入 rpop:右弹出,rpop('testList',function(err,v){...}) lpop:左弹出 lrange:取值,e.g:lrange(0,-1);

sets: 自动去重

sadd:添加元素,sadd('testSet',1); smembers:查看元素,smembers('testSet',function(err,v){...});

消息中介

1.消息订阅 var client = require('./client'); client.subscribe('testPublish'); // 订阅一个频道 client.on('message',function(channel,msg){ console.log('client on message , channel:',channel, ' message:',msg); }); 2.消息发布 var client = require('./client'); client.publish('testPublish','message from pub.js');