c10k

听说oracle向google索赔26亿的java侵权费，java快黄了，赶紧转c吧~~
参考：http://www.kegel.com/c10k.html#top
c10k就是同时处理几万的client，
io框架：
1.ACE （重量级）
2.ASIO Boost的一部分
3.libevent 轻量级 kqueue && select
4.poller rn 轻量级
5.构建可扩展服务器时， balance the use of worker thread and event-driven★★★
6
-----------
Serve many clients with each thread
每个线程多个客户端：
-------------- use nonblocking I/O and level-triggered readiness notification
select()
poll()
/dev/poll
kqueue()
-------------- use nonblocking I/O and readiness change notification
kqueue()
epoll
Realtime Signals
Signal-per-fd
-------use asynchronous I/O
aio
----------Serve one client with each server thread