분산락 https://velog.io/@hgs-study/redisson-distributed-lock
leader electrion https://zookeeper.apache.org/doc/current/zookeeperInternals.html#sc_consistency
https://yongho1037.tistory.com/687
https://www.pymoon.com/entry/%EC%A3%BC%ED%82%A4%ED%8D%BC-%EC%A3%BC%ED%82%A4%ED%8D%BC%EB%A5%BC-%ED%86%B5%ED%95%9C-%EB%A6%AC%EB%8D%94-%EC%84%A0%EC%B6%9C
https://blog.seulgi.kim/2014/05/zookeeper-1-znode-zookeeper-data.html
