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Editorial Team
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Asked: 2026-05-26T22:15:40+00:00

Some information: Cache-Control: must-revalidate, max-age=300 This tells mod_cache to cache the page for 300

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Some information:

"Cache-Control: must-revalidate, max-age=300"

This tells mod_cache to cache the page for 300 seconds (max-age) – unfortunately mod_cache doesn’t know the s-maxage option (see http://www.mnot.net/cache_docs/#CACHE-CONTROL), that’s why we must use the max-age option (which also tells your browser to cache).

If mod_cache knew the s-maxage option, we could use

"Cache-Control: must-revalidate, max-age=0, s-maxage=300"

which would tell mod_cache, but not the browser, to cache the page.

The question:
How do I know if mod_cache is actually memory caching anything at all.

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1 Answer

  1. Editorial Team

    With firebug, you can disable the entire cache, so every css, js, image, video …etc, it will request to the web server.

    So if this mod_cache is working, activate the firebug cache and the files that have that header, only will be requested to the web server every s-maxage time

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