<![CDATA[阿Tim日志]]> https://atim.cn/index.php zh-cn https://atim.cn/post// <![CDATA[nginx 代理缓存的坑]]> bkkkd <partybase@gmail.com> Tue, 23 Apr 2013 15:45:49 +0000 https://atim.cn/post//
http://wiki.nginx.org/HttpProxyModule#proxy_cache

引用
The cache depends on proxy buffers, and will not work if proxy_buffers is set to off.

The following response headers flag a response as uncacheable unless they are ignored:
    Set-Cookie
    Cache-Control containing "no-cache", "no-store", "private", or a "max-age" with a non-numeric or 0 value
    Expires with a time in the past
    X-Accel-Expires: 0


proxy_cache受几个因素影响：
1，proxy_buffers必须启动，否则将不能使用缓存
2，如果头信息存在以下的情况，缓存将会被忽略。
    有Set-Cookie
    Cache-Control的内容包含： "no-cache", "no-store", "private", or a "max-age" 是0
    Expires 设置的时间一个过期的时间
    X-Accel-Expires: 0

经过分析，原来程序中有一个程序修改后，默认所有页面都会传出一个Set-Cookie的值，这个值引起页面一直没有行缓存。从而使用页面服务器一直很慢。 ]]> https://atim.cn/post//#blogcomment <![CDATA[[评论] nginx 代理缓存的坑]]> <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 https://atim.cn/post//#blogcomment