src/Model.php
public function createNotExists($id, $value, $ttl = null)
    {
        return $this->create($id, $value, $ttl, false);
    }
public function createNotExists($id, $value, $ttl = null)
    {
        return $this->create($id, $value, $ttl, false);
    }
public function createNotExists ( $ id , $ value , $ ttl = null ) { return $ this -> create ( $ id , $ value , $ ttl , false ) ; }
Similar to setnx
@param $id
@param $value
@param null $ttl
@return bool
Similar to setnx