Redis基礎系列-0x008：釋出訂閱模式

0x001 訂閱一個或者多個頻道

命令格式：SUBSCRIBE channel [channel channel ...]

$ redis-cli
# 程式1
127.0.0.1:6379> SUBSCRIBE chat chat2
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "chat"
3) (integer) 1
1) "subscribe"
2) "chat2"
3) (integer) 2

0x002 釋出訊息

命令格式：PUBLISH channel message

$ redis-cli
# 程式2
127.0.0.1:6379> PUBLISH chat hellochat1
(integer) 1
127.0.0.1:6379> PUBLISH chat2 hellochat2
(integer) 1
#此時的程式1
127.0.0.1:6379> SUBSCRIBE chat chat2
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "chat"
3) (integer) 1
1) "subscribe"
2) "chat2"
3) (integer) 2
1) "message"
2) "chat"
3) "hellochat1"
1) "message"
2) "chat2"
3) "hellochat2"