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PUBSUB SHARDCHANNELS

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

PUBSUB SHARDCHANNELS returns the shard channels on this node that have at least one SSUBSCRIBE subscriber. With pattern, only shard channels matching that glob pattern are returned. In a cluster, each node reports only the shard channels of the slots it serves.

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 'SHARDCHANNELS'. Try PUBSUB HELP.

Examples

Section titled “Examples”
127.0.0.1:6379> PUBSUB SHARDCHANNELS
1) "orders:{eu}"
127.0.0.1:6379> PUBSUB SHARDCHANNELS orders:*
1) "orders:{eu}"

Compatibility

Section titled “Compatibility”

Same as Redis 7 and Valkey 8.

See also

Section titled “See also”

PUBSUB SHARDNUMSUB, SSUBSCRIBE, PUBSUB