Nginx 是一款轻量级的 Web 服务器，同时它也是一个反向代理服务器及电子邮件(IMAP/POP3)代理服务器。Nginx 由俄罗斯的程序设计师Igor Sysoev所开发，最初是为俄罗斯访问量第二的Rambler.ru 站点开发的，它已经在该站点运行超过四年多了。Nginx 特点是占有内存少，高并发形态下的发现也相当优秀。国内几个大型门户网站都已经过渡到 Nginx 平台上，比如：腾讯、网易等。正是考虑到这些优点，OwnLinux.cn 的Web服务器也是使用的 Nginx 。
Nginx 0.9.0 开发版有以下更新
# Feature: the “keepalive_disable” directive.
# Feature: the “map” directive supports variables as value of a defined variable.
# Feature: the “map” directive supports empty strings as value of the first parameter.
# Feature: the “map” directive supports expressions as the first parameter.
# Feature: nginx(8) manual page. Thanks to Sergey Osokin.
# Feature: Linux accept4() support. Thanks to Simon Liu.
# Workaround: elimination of Linux linker warning about “sys_errlist” and “sys_nerr”; the warning had appeared in 0.8.35.
# Bugfix: a segmentation fault might occur in a worker process, if the “auth_basic” directive was used. Thanks to Michail Laletin.
# Bugfix: compatibility with ngx_http_eval_module; the bug had appeared in 0.8.42.
原文链接：http://www.ownlinux.cn/2010/11/30/nginx-0-9-0-released.html
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