1
我看到大玩家(即akamai)开始将Expires
标题全部放在一起,并且仅使用Cache-Control
,例如,现在是否需要Expires标题?
curl -I https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-snc7/395029_379645875452936_1719075242_n.jpg
HTTP/1.1 200 OK
Last-Modified: Fri, 01 Jan 2010 00:00:00 GMT
Date: Sun, 25 Nov 2012 16:46:43 GMT
Connection: keep-alive
Cache-Control: max-age=1209600
那么还有什么理由继续使用Expires
?
另请参阅http://stackoverflow.com/questions/12479581/does-cache-control-s-maxage-header-override-expires-header-for-browser-cache – Raedwald