Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Written by Igor Sysoev in 2005, Nginx now hosts between 1% and 4% of all domains worldwide (sources: 1, 2). Although still in beta, Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption.

Nginx ("engine x") 是一个高性能的 HTTP 和 反向代理 服务器，也是一个 IMAP/POP3/SMTP 代理服务器。 Nginx 是由 Igor Sysoev 为俄罗斯访问量第二的 Rambler.ru 站点开发的，它已经在该站点运行超过两年半了。Igor 将源代码以类BSD许可证的形式发布。尽管还是测试版，但是，Nginx 已经因为它的稳定性、丰富的功能集、示例配置文件和低系统资源的消耗而闻名了。

Changes with nginx 0.7.30                                        24 Dec 2008

    *) Bugfix: a segmentation fault occurred in worker process, if  variables were used in the "fastcgi_pass" and "proxy_pass" 
       directives and host name must be resolved; the bug had appeared in  0.7.29.