RENAMENX – Redis

始于1.0.0可用。

时间复杂度： O(1)

Renames key to newkey if newkey does not yet exist. It returns an error under the same conditions as RENAME.

返回值

redis> SET mykey "Hello"

OK

redis> SET myotherkey "World"

OK

redis> RENAMENX mykey myotherkey

(integer) 0

redis> GET myotherkey

"World"