开源高性能 Web 服务器，Nginx 1.9.4 发布
Nginx是由俄罗斯软件工程师Igor Sysoev开发的一个高性能的HTTP和反向代理服务器，具备IMAP/POP3和SMTP服务器功能。Nginx最大的特点是对高并发的支持和高效的负载均衡，在高并发的需求场景下，是Apache服务器不错的替代品。目前，包括新浪、腾讯等知名网站已经开始使用Nginx作为Web应用服务器。
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