2.网络IO

http://www.cnblogs.com/Anker/p/3254269.html

http://blog.csdn.net/historyasamirror/article/details/5778378

http://blog.csdn.net/historyasamirror/article/details/4270633

https://www.ibm.com/developerworks/cn/linux/l-async/#ibm-pcon

http://www.cnblogs.com/Anker/category/442770.html

https://segmentfault.com/a/1190000003063859

---

select , epoll, kqueue

http://www.cnblogs.com/linganxiong/p/5583415.html

http://blog.csdn.net/shallwake/article/details/5265287

http://www.cnblogs.com/Anker/p/3265058.html