nginx实现研究

Nginx is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Igor Sysoev started development of Nginx in 2002, with the first public release in 2004. Nginx now hosts nearly 11.28% (43M) of all domains worldwide. Netcraft predicts that current trends will soon have Nginx surpassing Microsoft IIS as the second most popular web server. Nginx is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption. Nginx is one of a handful of servers written to address the C10K problem. Unlike traditional servers, Nginx doesn"t rely on threads to handle requests. Instead it uses a much more scalable event-driven (asynchronous) architecture. This architecture uses small, but more importantly, predictable amounts of memory under load. Even if you don"t expect to handle thousands of simultaneous requests, you can still benefit from Nginx"s high-performance and small memory foot