expires
There are 2 entries for the tag expires
Recently I wrote about Firefox using the Expires header as opposed to the max-age Cache-Control header. It was pointed out that the bug tracking this is marked as closed. I was very excited by this news and when I saw the news yesterday that Firefox had released a preview of 3.5 I decided to check and see if this bug fix had made it into 3.5. Needless to say I was very disappointed to still see that the incorrect caching behavior exists - the Expires header overrides the Cache-Control header. I did a little bit of digging around...
Deciphering and interpreting an RFC is never an easy thing and many times the same RFC can be interpreted different ways. My favourite RFC is RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1 specifically section 13 on caching and section 14 on headers make for a very interesting read. I frequently encounter situations where browsers and applications don't appear to behave as the RFC states they should. Here are a couple of examples I have come across: Firefox 3 Expires and Max-Age According to section 14.9.3 "If a response includes both an Expires header and a...
