Need some help about setting caching rules

hi , i see many website show like these cloudflare cache

cache-control: max-age=3, must-revalidate
cf-cache-status: DYNAMIC

i try many page rule on cloudflare page rules but not able to set above setting please tell me how to set it . i want my all site show above setting


The cache-control header should be set at your origin. You should ask how to properly set your website headers in forums like or etc, depending on the type of site configuration you have.

The cf-cache-status: DYNAMIC header will appear on any HTML page that is not set to be cached. By default, Cloudflare does not cache HTML, so unless you have a page rule with a “cache everything” setting, your HTML pages should already have this header.

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