Choose vs poll vs epoll

Question

I am developing a new server that should support thousands of UDP connections (somewhere around 100,000 sessions). Any input or suggestions you can use?

Answer 1

The author of CURL wrote a wonderful article about the poll vs select event libraries .

Answer 2

Answer: epoll if you use Linux, kqueue if you use FreeBSD or Mac OS X, and I / O completion ports if you are on Windows.

Some of the additional things you (almost certainly) want to explore are:

• Load balancing methods
• Multithreaded network
• Database architecture
• Perfect hash tables

Also important Note that UDP has no "connections", not TCP. It would also be in your interest to start small and large-scale, as debugging network solutions can be a difficult task.

Answer 3

Linux: epoll FreeBSD: kqueue Windows: ??

There are wrapper libraries like libevent and libev that can abstract this for you.