How do i prevent an overwrite on a key value in redis?

petulia3478

Also see: https://www.lightnetics.com/post/10426

This article assumes you have installed and connected to the redis server.

There's a redis command called setnx, that only sets the value if the key does not exist.

127.0.0.1:6379> set song1 "the tide is high"
OK
127.0.0.1:6379> setnx song1 "that's entertainment"
(integer) 0
127.0.0.1:6379> get song1
"the tide is high"
127.0.0.1:6379>

This is the same as using the NX option for set.