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。
Changes with nginx 1.0.11 15 Dec 2011
*) Change: now double quotes are encoded in an “echo” SSI-command
Thanks to Zaur Abasmirzoev.
*) Feature: the “image_filter_sharpen” directive.
*) Bugfix: a segmentation fault might occur in a worker process if SNI
was used; the bug had appeared in 1.0.9.
*) Bugfix: SIGWINCH signal did not work after first binary upgrade; the
bug had appeared in 1.0.9.
*) Bugfix: the “If-Modified-Since”, “If-Range”, etc. client request
header lines might be passed to backend while caching; or not passed
without caching if caching was enabled in another part of the
*) Bugfix: in the “scgi_param” directive, if complex parameters were
*) Bugfix: “add_header” and “expires” directives did not work if a
request was proxied and response status code was 206.
*) Bugfix: in the “expires @time” directive.
*) Bugfix: in the ngx_http_flv_module.
Thanks to Piotr Sikora.
*) Bugfix: in the ngx_http_mp4_module.
*) Bugfix: nginx could not be built on FreeBSD 10.
*) Bugfix: nginx could not be built on AIX.