参考：https://learn.lianglianglee.com/%E4%B8%93%E6%A0%8F/ZooKeeper%E6%BA%90%E7%A0%81%E5%88%86%E6%9E%90%E4%B8%8E%E5%AE%9E%E6%88%98-%E5%AE%8C/00%20%E5%BC%80%E7%AF%87%E8%AF%8D%EF%BC%9A%E9%80%89%E6%8B%A9%20ZooKeeper%EF%BC%8C%E4%B8%80%E6%AD%A5%E5%88%B0%E4%BD%8D%E6%8E%8C%E6%8F%A1%E5%88%86%E5%B8%83%E5%BC%8F%E5%BC%80%E5%8F%91.md
