public function get($key)
    {
        $key = $this->salted($key, $this->suffix);

        $raw = $this->predis->get($key);

        // every response should be a php serialized string.
        // values not matching this pattern will explode.
        // missing data should return null, which is not unserialized.

        if (is_string($raw)) {
            return unserialize($raw);
        }

        return $raw;
    }