恢复询问

RESTORE-ASKING key ttl serialized-value [REPLACE] [ABSTTL]
  [IDLETIME seconds] [FREQ frequency]

Available since:

3.0.0

Time complexity:

O(1) to create the new key and additional O(N*M) to reconstruct the serialized value, where N is the number of Redis objects composing the value and M their average size. For small string values the time complexity is thus O(1)+O(1*M) where M is small, so simply O(1). However for sorted set values the complexity is O(N*M*log(N)) because inserting values into sorted sets is O(log(N)).

ACL categories:

@keyspace, @write, @slow, @dangerous,

RESTORE-ASKING 命令是一个内部命令。 它由 Redis 集群主节点在槽迁移期间使用。

RESP2/RESP3 回复

历史

• 从 Redis 版本 3.0.0 开始：添加了 REPLACE 修饰符。
• 从 Redis 5.0.0 版本开始：添加了 ABSTTL 修饰符。
• 从Redis版本5.0.0开始：添加了IDLETIME和FREQ选项。