redis訂閱與發布(把redis作為消息中間件)

訂閱頻道
127.0.0.1:6379> subscribe chat1
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "chat1"
3) (integer) 1
1) "message"
2) "chat1" // 訂閱頻道后當前線程處於阻塞狀態
3) "Hello World"
1) "message"
2) "chat1"
3) "OK"

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發布消息
127.0.0.1:6379> publish chat1 "Hello World"
(integer) 1
127.0.0.1:6379> publish chat1 OK
(integer) 1

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查看訂閱與發布
127.0.0.1:6379> pubsub channels
1) "chat1"

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查看某個頻道的訂閱數量
127.0.0.1:6379> pubsub numsub chat1
1) "chat1"
2) (integer) 1

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退訂頻道
127.0.0.1:6379> unsubscribe chat1(Ctrl+C)

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退訂指定模式的一組頻道
127.0.0.1:6379> punsubscribe java.*(Ctrl+C)

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訂閱指定模式的一組頻道
psubscribe java.*
發布消息
127.0.0.1:6379> publish java.io "This is a java.io message"
發布消息
127.0.0.1:6379> publish java.file "This is a java.file message"