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PUBSUB SHARDCHANNELS

Syntax​

PUBSUB SHARDCHANNELS [pattern]

Time complexity: O(N) where N is the number of active shard channels, and assuming constant time pattern matching (relatively short shard channels).

Lists the currently active shard channels.

An active shard channel is a Pub/Sub shard channel with one or more subscribers.

If no pattern is specified, all the channels are listed, otherwise if pattern is specified only channels matching the specified glob-style pattern are listed.

The information returned about the active shard channels are at the shard level and not at the cluster level.

Return​

Array reply: a list of active channels, optionally matching the specified pattern.

Examples​

> PUBSUB SHARDCHANNELS
1) "orders"
PUBSUB SHARDCHANNELS o*
1) "orders"