Redis

https://baijiahao.baidu.com/s?id=1654694618189745916&wfr=spider&for=pc

https://blog.csdn.net/Butterfly_resting/article/details/89668661 

https://www.jianshu.com/p/439e8b349f48

https://www.jianshu.com/p/88c58a09f95a

https://www.cnblogs.com/qqflying/p/9192331.html

https://zhuanlan.zhihu.com/p/89620471