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Nginx v1.11.13 发布，一款轻量级的Web 服务器

Nginx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，供俄国大型的入口网站及搜索引擎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服务器中表现较好，中国大陆使用nginx网站用户有：京东、新浪、网易、腾讯、淘宝等。

更新日志

Feature: the "http_429" parameter of the "proxy_next_upstream", "fastcgi_next_upstream", "scgi_next_upstream", and "uwsgi_next_upstream" directives. Thanks to Piotr Sikora.
Bugfix: in memory allocation error handling.
Bugfix: requests might hang when using the "sendfile" and "timer_resolution" directives on Linux.
Bugfix: requests might hang when using the "sendfile" and "aio_write" directives with subrequests.
Bugfix: in the ngx_http_v2_module.Thanks to Piotr Sikora.
Bugfix: a segmentation fault might occur in a worker process when using HTTP/2.
Bugfix: requests might hang when using the "limit_rate", "sendfile_max_chunk", "limit_req" directives, or the $r->sleep() embedded perl method with subrequests.
Bugfix: in the ngx_http_slice_module.