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                [toc] Redis 發布訂閱是一種消息通信模式:發送者發送消息,訂閱者接收消息,客戶端可以訂閱任意數量的頻道。 ![](http://img.zhufengpeixun.cn/redissubscribe.jpg) ## 命令行操作 ![](https://box.kancloud.cn/5dae568fa44921a71171699f6ff499ab_661x634.png) ## 用node操作 ``` const redis = require('redis'); let client1 = redis.createClient(6369,'localhost'); let client2 = redis.createClient(6369,'localhost'); //client1訂閱了food drink兩個頻道 client1.subscribe('food'); client1.subscribe('drink'); //指定當收到訂閱的消息之后要干什么 client1.on('message',function(channel,message){ console.log(channel,message); client.unsubscribe('food'); //以后再也不接受食品頻道的消息 }); //client2向頻道food 和 drink發送 消息 //監聽比較慢 需要延時發送 setTimeout(function(){ client2.publish('food','面包'); client2.publish('drink','可樂'); setTimeout(function(){ client2.publish('food','面包2'); client2.publish('drink','可樂2'); },1000); },1000); ```
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