Nginx 1.9.4 发布，这是个主线版本，更新内容如下：
*) Change: the "proxy_downstream_buffer" and "proxy_upstream_buffer"
directives of the stream module are replaced with the
"proxy_buffer_size" directive.
*) Feature: the "tcp_nodelay" directive in the stream module.
*) Feature: multiple "sub_filter" directives can be used simultaneously.
*) Feature: variables support in the search string of the "sub_filter"
directive.
*) Workaround: configuration testing might fail under Linux OpenVZ.
Thanks to Gena Makhomed.
*) Bugfix: old worker processes might hog CPU after reconfiguration with
a large number of worker_connections.
*) Bugfix: a segmentation fault might occur in a worker process if the
"try_files" and "alias" directives were used inside a location given
by a regular expression; the bug had appeared in 1.7.1.
*) Bugfix: the "try_files" directive inside a nested location given by a
regular expression worked incorrectly if the "alias" directive was
used in the outer location.
*) Bugfix: in hash table initialization error handling.
*) Bugfix: nginx could not be built with Visual Studio 2015.
更多内容请查看：CHANGES 下载地址：
Nginx（发音同 engine x）是一款轻量级的Web
服务器／反向代理服务器及电子邮件（IMAP/POP3）代理服务器，并在一个BSD-like 协议下发行。由俄罗斯的程序设计师Igor
Sysoev所开发，最初供俄国大型的入口网站及搜寻引擎Rambler（俄文：Рамблер）使用。
其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页伺服器中表现较好.目前中国大陆使用nginx网站用户有：新浪、网易、
腾讯,另外知名的微网志Plurk也使用nginx。 | 
