newkey does not yet exist.
It returns an error when
key does not exist.
In Cluster mode, both
newkey must be in the same hash slot, meaning that in practice only keys that have the same hash tag can be reliably renamed in cluster.
<= 3.2.0: Before Redis 3.2.0, an error is returned if source and destination names are the same.
Integer reply, specifically:
keywas renamed to
"OK"redis> SET myotherkey "World"
"OK"redis> RENAMENX mykey myotherkey
(integer) 0redis> GET myotherkey