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Redis之發(fā)布與訂閱

發(fā)布時(shí)間:2020-08-08 13:21:50 來(lái)源:ITPUB博客 閱讀:145 作者:stonebox1122 欄目:關(guān)系型數(shù)據(jù)庫(kù)
訂閱者可以通過(guò)subscribe和psubscribe命令向redis server訂閱自己感興趣的消息類型。redis將信息類型稱為通道(channel)。當(dāng)發(fā)布者通過(guò)publish命令向redis server發(fā)送特定類型的信息時(shí),訂閱該信息類型的全備client都會(huì)收到此消息。
會(huì)話1:監(jiān)聽(tīng)頻道1
127.0.0.1:6379> subscribe tv1
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "tv1"
3) (integer) 1

會(huì)話2:監(jiān)聽(tīng)頻道1和2
127.0.0.1:6379> subscribe tv1 tv2
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "tv1"
3) (integer) 1
1) "subscribe"
2) "tv2"
3) (integer) 2

會(huì)話3:在頻道1發(fā)布信息
127.0.0.1:6379> publish tv1 stone
(integer) 2

查看會(huì)話1:
127.0.0.1:6379> subscribe tv1
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "tv1"
3) (integer) 1
1) "message"
2) "tv1"
3) "stone"

查看會(huì)話2:
127.0.0.1:6379> subscribe tv1 tv2
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "tv1"
3) (integer) 1
1) "subscribe"
2) "tv2"
3) (integer) 2
1) "message"
2) "tv1"
3) "stone"


會(huì)話3:在頻道2發(fā)布信息
127.0.0.1:6379> publish tv2 stone2
(integer) 1

查看會(huì)話2:
127.0.0.1:6379> subscribe tv1 tv2
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "tv1"
3) (integer) 1
1) "subscribe"
2) "tv2"
3) (integer) 2
1) "message"
2) "tv1"
3) "stone"
1) "message"
2) "tv2"
3) "stone2
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