nodejs ioredis nodejs ioredis订阅

 

redis NPM 官方介绍地址：https://www.npmjs.com/package/redis

 

 

let redis = require('redis');


let subscriber;
let publisher;
let options = {
    host: "192.168.211.33",
    port: 6379,
    password: "123456"
}
subscriber = redis.createClient(options); //创建订阅客户端

subscriber.on("subscribe", (channel, count) => {
    console.log("Subscribe # subscribed to " + channel + ", " + count + " total subscriptions");
});

subscriber.on('message', (channel, message) => {
    console.log('Message # Channel ' + channel + ': ' + message);
});

subscriber.on('unsubscribe', (channel, count) => {
    console.log("Unsubscribe # to " + channel + ", " + count + " total subscriptions");
});

subscriber.on("error", (err) => {
    console.log("redis error: " + JSON.stringify(err));
});

subscriber.subscribe('main_chat_room'); //订阅信道


publisher = redis.createClient(options); //创建发布客户端
publisher.publish('main_chat_room', "BBQ IS HERE"); //发布消息


setTimeout(() => {
    subscriber.unsubscribe('main_chat_room'); //延时取消信道订阅
}, 15000);


setTimeout(() => {
    subscriber.end();//关闭连接
    publisher.end();
}, 20000);