Redis String: SETNX key value

SETNX key value

Redis SETNX command is used to set some string value in redis key, if the key does not exist in redis. When key already holds a value, no operation is performed. SETNX is short for "SET if Not eXists".

Syntax:

SETNX KEY_NAME VALUE

Available since

1.0.0.

Return Value

Integer replies 1 or 0

• 1, if the key is set.
• 0, if the key is not set.

Return Value Type

Integer

Example: Redis SETNX

redis 127.0.0.1:6379> SETNX mykey redis
(integer) 1
redis 127.0.0.1:6379> SETNX mykey mongodb
(integer) 0
redis 127.0.0.1:6379> GET mykey
"redis"

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