1. Data model
https://blog.csdn.net/qiaojialin/article/details/78408511
2. Scource code
https://blog.csdn.net/hellohellohhhhh/article/details/78410379
http://ju.outofmemory.cn/entry/116815
https://zqhxuyuan.github.io/2016/10/13/Cassandra-Code-Network/
https://blog.csdn.net/xuqianghit/article/details/6943533
https://blog.longyb.com/2019/03/03/cassandra_write_path/
Cassandra writes in depth. https://blog.softwaremill.com/cassandra-writes-in-depth-6ea8d7581eb
