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Posted to bugs@httpd.apache.org by bu...@apache.org on 2010/10/19 01:12:47 UTC

DO NOT REPLY [Bug 25201] Provide Cache Purge operation

https://issues.apache.org/bugzilla/show_bug.cgi?id=25201

--- Comment #12 from Graham Leggett <mi...@sharp.fm> 2010-10-18 19:12:45 EDT ---
What you're talking about is a conditional request, which comes as standard in
RFC2616.

Send a GET request with the header "Cache-Control: max-age=0". If the cache has
a cached entity, it will add a conditional "If-None-Match" or
"If-Modified-Since" header, to which your server responds with "304 Not
Modified" if the content has not changed, or "200 OK" followed by the new
content if the content has changed.

Any CMS should support conditional requests as a matter of course, as they
represent a significant performance improvement.

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