取消订阅
Syntax
UNSUBSCRIBE [channel [channel ...]]
- Available since:
- 2.0.0
- Time complexity:
- O(N) where N is the number of channels to unsubscribe.
- ACL categories:
-
@pubsub,@slow,
从给定的频道取消订阅客户端，如果没有给出频道，则从所有频道取消订阅。
当没有指定频道时，客户端将从所有先前订阅的频道中取消订阅。 在这种情况下，每个取消订阅的频道都会向客户端发送一条消息。
RESP2/RESP3 回复
When successful, this command doesn't return anything. Instead, for each channel, one message with the first element being the stringunsubscribe is pushed as a confirmation that the command succeeded.