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为什么在上次修改匹配If-modified-since之后Apache会发送200 OK？
我正在尝试有关缓存策略的基本行为：应该缓存文件，并每次都使用服务器对其进行重新验证。因此，我希望Apache将304发送回去。 这是每次浏览器刷新都会发生的对话框： Status Code:200 OK Request Headers Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Accept-Encoding:gzip,deflate,sdch Accept-Language:fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4 Cache-Control:max-age=0 Connection:keep-alive Cookie: ... Host:... If-Modified-Since:Tue, 14 Oct 2014 15:10:37 GMT If-None-Match:"1461-505636af08fcd-gzip" User-Agent:Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.116 Safari/537.36 Response Headers Accept-Ranges:bytes Cache-Control:No-cache Connection:Keep-Alive Content-Encoding:gzip Content-Length:1412 Content-Type:text/html Date:Tue, 14 Oct 2014 16:58:05 GMT ETag:"1461-505636af08fcd-gzip" Keep-Alive:timeout=5, max=99 Last-Modified:Tue, …