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PUBSUB CHANNELS

Last updated 
PUBSUB CHANNELS [pattern]
Group
Pub/Sub
Complexity
O(N) where N is the number of active channels
Arity
-2 (at least 2 words, counting the command name)
HotKV Cloud
All plans
On-Premise
no license needed

PUBSUB CHANNELS returns the channels on this node that have at least one SUBSCRIBE subscriber. Pattern subscriptions are not counted, and shard channels are listed by PUBSUB SHARDCHANNELS instead. With pattern, only channels matching that glob pattern are returned.

Return value

Section titled “Return value”
Case RESP2 RESP3
Always Array of bulk strings (empty when there are none) Array

More than one pattern is an error: ERR unknown subcommand or wrong number of arguments for 'CHANNELS'. Try PUBSUB HELP.

Examples

Section titled “Examples”
127.0.0.1:6379> PUBSUB CHANNELS
1) "news"
2) "alerts"
127.0.0.1:6379> PUBSUB CHANNELS al*
1) "alerts"

Compatibility

Section titled “Compatibility”

Same as Redis 7 and Valkey 8.

See also

Section titled “See also”

PUBSUB NUMSUB, PUBSUB, SUBSCRIBE