SSUBSCRIBE

Syntax

SSUBSCRIBE shardchannel [shardchannel ...]

Available since:: 7.0.0
Time complexity:: O(N) where N is the number of shard channels to subscribe to.
ACL categories:: @pubsub, @slow,

订阅客户端到指定的分片频道。

在Redis集群中，分片通道通过用于将键分配到槽的相同算法分配到槽。客户端可以订阅覆盖某个槽的节点（主节点/副本节点）以接收发布的消息。所有指定的分片通道需要属于单个槽，以便在给定的SSUBSCRIBE调用中订阅，客户端可以通过单独的SSUBSCRIBE调用订阅跨不同槽的通道。

有关分片发布/订阅的更多信息，请参阅Sharded Pub/Sub。

示例

> ssubscribe orders
Reading messages... (press Ctrl-C to quit)
1) "ssubscribe"
2) "orders"
3) (integer) 1
1) "smessage"
2) "orders"
3) "hello"

RESP2 回复

When successful, this command doesn't return anything. Instead, for each shard channel, one message with the first element being the string ssubscribe is pushed as a confirmation that the command succeeded. Note that this command can also return a -MOVED redirect.

RESP3 回复

When successful, this command doesn't return anything. Instead, for each shard channel, one message with the first element being the string 'ssubscribe' is pushed as a confirmation that the command succeeded. Note that this command can also return a -MOVED redirect.