学习

http://www.cppblog.com/jerryma/archive/2012/01/31/164704.html 定时器

https://github.com/mbrossard/threadpool 线程池

http://troydhanson.github.io/uthash/userguide.html hash

http://www.ietf.org/ 协议

http://m.oschina.net/blog/88173 NoSQL