1.golang select-case 实现机制

https://hitzhangjie.github.io/jekyll/update/2018/05/19/golang-select-case实现机制.html

2.如何优雅的控制 goroutine 的数量

https://my.oschina.net/xlplbo/blog/682884

3.LIMIT THE NUMBER OF GOROUTINES RUNNING AT THE SAME TIME

https://blog.antoine-augusti.fr/2015/12/limit-the-number-of-goroutines-running-at-the-same-time/

4.Hive 之 COUNT DISTINCT 优化

http://datavalley.github.io/2016/02/15/Hive%E4%B9%8BCOUNT-DISTINCT%E4%BC%98%E5%8C%96

5.理解 LINUX 的 MEMORY OVERCOMMIT

http://linuxperf.com/?p=102

6.mysql: show processlist 详解

https://zhuanlan.zhihu.com/p/30743094