Redis Renamenx command

Redis key (key)

Redis Renamenx command is used to modify the key of the new key name does not exist.

grammar

redis Renamenx basic command syntax is as follows:

redis 127.0.0.1:6379> RENAMENX OLD_KEY_NAME NEW_KEY_NAME

Available versions

> = 1.0.0

return value

When modifying success, 1 is returned. If NEW_KEY_NAME already exists, 0 is returned.

Examples

# newkey 不存在，改名成功

redis> SET player "MPlyaer"
OK

redis> EXISTS best_player
(integer) 0

redis> RENAMENX player best_player
(integer) 1


# newkey存在时，失败

redis> SET animal "bear"
OK

redis> SET favorite_animal "butterfly"
OK

redis> RENAMENX animal favorite_animal
(integer) 0

redis> get animal
"bear"

redis> get favorite_animal
"butterfly"

Redis key (key)