Do I still need to send the "Expires" header, or can I assume that web caches understand "Cache-Cont

Posted by chris_l on Server Fault See other posts from Server Fault or by chris_l
Published on 2010-06-09T09:59:16Z Indexed on 2010/06/09 10:02 UTC
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Filed under:

http

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caching

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http-headers

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http-proxy

I want to reduce the overhead caused by HTTP headers to a minimum, so I'd like to avoid the "Expires" header, and use "Cache-Control" only - or maybe the other way around (I'm planning to send very short HTTP responses to browsers, so the answer to this question doesn't fully apply here: My headers account for a significant percentage).

AFAIK, the "Cache-Control" header was standardized in HTTP 1.1, but are there still web caches/proxies, that don't understand it?

Note: This is a sub-question to my stackoverflow (bounty) question

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