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.