Documentation is available at http://nginx.org

http://www.nginx-discovery.com/

中文注释

https://github.com/chronolaw/annotated_nginx

https://www.kancloud.cn/digest/understandingnginx/202586

http://tengine.taobao.org/book/index.html

https://github.com/y123456yz/reading-code-of-nginx-1.9.2

http://blog.sina.com.cn/s/articlelist_1834459124_0_1.html