public function getMetaData(string $key)
	{
		$key = $this->prefix . $key;

		$value = $this->get($key);

		if ($value !== null)
		{
			$time = time();
			return [
				'expire' => $time + $this->redis->ttl($key),
				'mtime'  => $time,
				'data'   => $value,
			];
		}

		return null;
	}