分布式缓存

缓存服务器常见的有Memcached和Redis，Redis更轻量级，适用小数据，比如Json/String。Memcached更适用大文件，比如短视频

1. requirements

Reference

• https://www.infoq.com/articles/netflix-global-cache/

• https://www.1point3acres.com/bbs/thread-1097035-1-1.html

• Distributed Counter System Design

• 【造轮子】用C++造一个基于LSM的列存KV存储引擎 - 跑路的文章 - 知乎

• https://static.googleusercontent.com/media/research.google.com/en//archive/bigtable-osdi06.pdf