redis----发布订阅

发布订阅

命令

• 订阅

subscribe 频道名 [频道名 ...]

例如：创建一个频道名为animal_channel

127.0.0.1:6379> subscribe animal_channel
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "animal_channel"
3) (integer) 1

• 发布消息

publish 频道 消息

例如：重新开一个终端，给animal_channel发送消息

127.0.0.1:6379> publish animal_channel 'panda is cute '
(integer) 1
127.0.0.1:6379> publish animal_channel 'I like panda'
(integer) 1

开启了订阅的anim_channel频道的终端接收到的数据

127.0.0.1:6379> subscribe animal_channel
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "animal_channel"
3) (integer) 1
1) "message"
2) "animal_channel"
3) "panda is cute "
1) "message"
2) "animal_channel"
3) "I like panda"

• 取消订阅
• 如果不写频道名，则表示取消所有频道

unsubscribe 频道名 [频道名 ...]

例如：取消已经订阅的animal_channel

127.0.0.1:6379> unsubscribe animal_channel
1) "unsubscribe"
2) "animal_channel"
3) (integer) 0