SUBSCRIBE

SUBSCRIBE

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. However, if RESP3 is used (see HELLO) it is possible for a client to issue any commands while in subscribed state.

For more information, see Pub/sub.

Return

When successful, this command doesn't return anything. Instead, for each channel, one message with the first element being the string "subscribe" is pushed as a confirmation that the command succeeded.

Behavior change history

• >= 6.2.0: RESET can be called to exit subscribed state.