public function zadd($key, ...$dictionary)
    {
        $this->init();
        if (is_array($dictionary[0])) {
            $return = 0;
            foreach ($dictionary[0] as $member => $score) {
                $res = $this->zadd($key, $score, $member);
                $return += $res;
            }
            return $return;
        }
        return $this->driver->zadd($key, ...$dictionary);
    }