public function addReferer($url)
    {
        $this->redis->zadd($this->concatenateKeys($this->keyList, self::KEY_REFERER_SUFFIX), time() ,$url);

        return $this;
    }
public function addReferer($url)
    {
        $this->redis->zadd($this->concatenateKeys($this->keyList, self::KEY_REFERER_SUFFIX), time() ,$url);

        return $this;
    }
public function addReferer ( $ url ) { $ this -> redis -> zadd ( $ this -> concatenateKeys ( $ this -> keyList , self :: KEY_REFERER_SUFFIX ) , time ( ) , $ url ) ; return $ this ; }
Add the referrer to a subset.

@param string $url

@return PersisterInterface
Add the referrer to a subset .