SUBSCRIBE channel [channel ...]
Available since: 2.0.0
Time complexity: O(N) where N is the number of channels to subscribe to.
ACL categories:
@pubsub
@slow
Subscribes the client to the specified channels.
Once the client enters the subscribed state it is not supposed to issue any
other commands, except for additional SUBSCRIBE, SSUBSCRIBE, PSUBSCRIBE, UNSUBSCRIBE, SUNSUBSCRIBE,
PUNSUBSCRIBE, PING, RESET and QUIT commands.
Behavior change history
>= 6.2.0:RESETcan be called to exit subscribed state.