redis-cli - Command-line client to redis-server

2.1. Pub/Sub 订阅与发布

redis 提供基本的MQ 功能，下面我们做一个演示

开启第一个终端窗口，订阅first second

$ redis-cliredis 127.0.0.1:6379> SUBSCRIBE first secondReading messages... (press Ctrl-C to quit)1) "subscribe"2) "first"3) (integer) 11) "subscribe"2) "second"3) (integer) 2

开启第二个终端窗口，分别发送first second

$ redis-cliredis 127.0.0.1:6379>  PUBLISH second Hello(integer) 1redis 127.0.0.1:6379>  PUBLISH first Helloworld!!!(integer) 1redis 127.0.0.1:6379> quit

现在切换到第一个终端窗口，应该能够看到发送过来的字符串

$ redis-cliredis 127.0.0.1:6379> SUBSCRIBE first secondReading messages... (press Ctrl-C to quit)1) "subscribe"2) "first"3) (integer) 11) "subscribe"2) "second"3) (integer) 21) "message"2) "second"3) "Hello"1) "message"2) "first"3) "Helloworld!!!"