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From Ali Nebi <>
Subject [users@httpd] How to use mod_expire and how to tell on user browser that content is changed.
Date Fri, 23 May 2008 18:59:08 GMT

i would like to use mod_expire in our site, but what i'm trying to
understand and lear is, how to tell user browser that cached content is
already changed and to cache the new one.

For example if i have set expire time to be this way "access 2 weeks",
but content is changed before this time, this mean that user will not
able to see the new content, because expire time. Is there some way to
tell user browser that this content is changed and to cache the new one?

The reason for this is that we are making some changes time to time and
it will be good if there is somehow to tell the browser for this. We
really need to implement this in our system, because it will reduce
system loading and will increase site performance from user side.

Please give me more info about this. I read some tutorials for
mod_expire from apache site and other internet blogs, but i can't
understand how to do this job with informing browsers for changed

Thanks in advanced!

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