How to tell if SETNX put a value

[JeffBNimble]

I'm using the following command to do a "set if not exists", but I'm not sure how to tell if the command set the value or not.

cmd := c.Do(context.Background(), c.B().Set().Key("someKey").Value(string("someValue")).Nx().Ex(expiration).Build())

What function do I send to cmd to know the result of the SETNX?

[rueian]

Hi @JeffBNimble,

According to this:

You can check its return like this:

err := c.Do(context.Background(), c.B().Set().Key("someKey").Value(string("someValue")).Nx().Ex(expiration).Build()).Error()
if rueidis.IsRedisNil(err) {
	// the SET operation was not performed because the NX condition was not met.
}
if err != nil {
	// other error
}