Listens for messages published to channels that match one or more patterns.
PSUBSCRIBE pattern [pattern…]
Subscribes the client to the given patterns.
Supported glob-style patterns:
h?llo subscribes to hello, hallo and hxlloh*llo subscribes to hllo and heeeelloh[ae]llo subscribes to hello and hallo, but not hilloUse \ to escape special characters if you want to match them verbatim.
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.
Note that RESET can be called to exit subscribed state.
For more information, see Pub/sub.
When successful, this command doesn’t return anything. Instead, for each pattern, one message with the first element being the string psubscribe is pushed as a confirmation that the command succeeded.
O(N) where N is the number of patterns to subscribe to.
@pubsub @slow
PUBLISH, PUBSUB, PUBSUB CHANNELS, PUBSUB HELP, PUBSUB NUMPAT, PUBSUB NUMSUB, PUBSUB SHARDCHANNELS, PUBSUB SHARDNUMSUB, PUNSUBSCRIBE, SPUBLISH, SSUBSCRIBE, SUBSCRIBE, SUNSUBSCRIBE, UNSUBSCRIBE.