Chrome - 为什么要发送 if-modified-since 请求? [英] Chrome - why is it sending if-modified-since requests?
问题描述
我有一个包含很多小图像(图标)的页面.与 chrome 一起使用时,每次重新加载页面时,chrome 都会使用 if-modified-since 标头从服务器请求每个图标.
所有图标都带有 expires 和 max-age 标头.Firefox 从其缓存中加载图像.
为什么 chrome 会这样做,我该如何防止?
谢谢
你检查过请求头了吗?
'Cache-Control' 始终设置为 'max-age=0',无论您是按 Enter、f5 还是 ctrl+f5.除非您启动 Chrome 并输入 url 并按 Enter.">
http://techblog.tilllate.com/2008/11/14/clientside-cache-control/
I have a page with lots of small images (icons). When used with chrome, each time the page is reloaded, chrome requests each icon from the server with if-modified-since header.
All icons are served with expires and max-age headers. Firefox loads images from its cache.
Why is chrome doing that and how can I prevent it?
Thanks
Have you checked the request headers?
"‘Cache-Control’ is always set to ‘max-age=0′, no matter if you press enter, f5 or ctrl+f5. Except if you start Chrome and enter the url and press enter."
http://techblog.tilllate.com/2008/11/14/clientside-cache-control/
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