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,
The RESTORE-ASKING command is an internal command.
It is used by a Redis cluster master during slot migration.
History
Starting with Redis version 3.0.0: Added the REPLACE modifier.
Starting with Redis version 5.0.0: Added the ABSTTL modifier.
Starting with Redis version 5.0.0: Added the IDLETIME and FREQ options.