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 hxllo
h*llo
subscribes to hllo
and
heeeello
h[ae]llo
subscribes to hello
and
hallo,
but not hillo
Use \
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.