在命令行订阅频道是阻塞式的;那么取消订阅频道的意义只在客户端的多订阅么?
[root@itcast ~]# redis-cli -p 6382 127.0.0.1:6382> ping PONG 127.0.0.1:6382> SUBSCRIBE sohu:tv Reading messages... (press Ctrl-C to quit) 1) "subscribe" 2) "sohu:tv" 3) (integer) 1 1) "message" 2) "sohu:tv" 3) "hello world" 1) "message" 2) "sohu:tv" 3) "\xe6\x88\x91\xe7\x88\xb1\xe4\xbd\xa0" 1) "message" 2) "sohu:tv" 3) "ilove\xbd\xa0" 1) "message" 2) "sohu:tv" 3) "i love you"