SETNX key value

Syntax

SETNX key value

   Sets the value to key, if key not exists.

Returns

   1 if the key was set

   0 if the key was not set

127.0.0.1:6379> get a 
(nil) 
127.0.0.1:6379> setnx a 100 
(integer) 1 
127.0.0.1:6379> get a 
"100" 
127.0.0.1:6379> set b 20 
OK 
127.0.0.1:6379> setnx b 200 
(integer) 0 
127.0.0.1:6379> get b 
"20" 

Prevoius                                                 Next                                                 Home