zk redis 分布式锁
http://www.zlovezl.cn/articles/python-zookeeper/
https://juejin.im/entry/596438bc6fb9a06bb47495f1
https://www.jianshu.com/p/5d12a01018e1
https://github.com/mymonkey110/zookeeper-book/blob/master/SUMMARY.md
https://legacy.gitbook.com/book/mymonkey110/zookeeper-distributed-process-coordination/details