- Usage:
-
SSUBSCRIBE shardchannel [ shardchannel ... ]
- Complexity:
- O(N) where N is the number of shard channels to subscribe to.
- Since:
- 7.0.0
Subscribes the client to the specified shard channels.
In a Valkey cluster, shard channels are assigned to slots by the same algorithm used to assign keys to slots.
Client(s) can subscribe to a node covering a slot (primary/replica) to receive the messages published.
All the specified shard channels needs to belong to a single slot to subscribe in a given SSUBSCRIBE call,
A client can subscribe to channels across different slots over separate SSUBSCRIBE call.
For more information about sharded Pub/Sub, see Sharded Pub/Sub.
Examples
> ssubscribe orders
Reading messages... (press Ctrl-C to quit)
1) "ssubscribe"
2) "orders"
3) (integer) 1
1) "smessage"
2) "orders"
3) "hello"