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。
Nginx Nginx 主线版 1.15.1 已发布，该版本新增了一个随机负载均衡的方法(random load balancing method)，还包括一些其他的新增功能和 bug 修复。
Feature: the "random" directive inside the "upstream" block.
Feature: improved performance when using the "hash" and "ip_hash" directives with the "zone" directive.
Feature: the "reuseport" parameter of the "listen" directive now uses SO_REUSEPORT_LB on FreeBSD 12.
Bugfix: HTTP/2 server push did not work if SSL was terminated by a proxy server in front of nginx.
Bugfix: the "tcp_nopush" directive was always used on backend connections.
Bugfix: sending a disk-buffered request body to a gRPC backend might fail.
下载地址：
http://nginx.org/en/download.html
更新说明：