Node.js using redis subscribe Release Management

 

redis NPM Official Address: 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) => { 
    the console.log ( "Redis error:" + the JSON.stringify (ERR)); 
}); 

subscriber.subscribe ( 'main_chat_room'); // channel subscription 


publisher = redis.createClient (options); // Create Post client 
publisher.publish ( 'main_chat_room', "BBQ IS HERE"); // announced 


the setTimeout (() => { 
    subscriber.unsubscribe ( 'main_chat_room'); // subscription channel delay cancel 
}, 15000); 


the setTimeout (() => { 
    subscriber.quit (); // close the connection 
    publisher.quit (); 
}, 20000);