nginx（发音同engine x）是一款由俄罗斯程序员Igor Sysoev所开发轻量级的网页服务器、反向代理服务器以及电子邮件 （IMAP/POP3）代理服务器。起初是供俄国大型的门户网站及搜索引擎Rambler（俄语：Рамблер）使用。此软件BSD-like协议下发 行，可以在UNIX、GNU/Linux、BSD、Mac OS X、Solaris，以及Microsoft Windows等操作系统中运行。下载地址：
http://nginx.org/download/nginx-1.2.8.tar.gz
Windows
http://nginx.org/download/nginx-1.2.8.zip

改进内容：
*) Bugfix: new sessions were not always stored if the "ssl_session_cache shared" directive was used and there was no free space in shared memory. Thanks to Piotr Sikora.
*) Bugfix: responses might hang if subrequests were used and a DNS error happened during subrequest processing. Thanks to Lanshun Zhou.
*) Bugfix: in the ngx_http_mp4_module. Thanks to Gernot Vormayr. *) Bugfix: in backend usage accounting.