Check site speed (TTFB)

I installed today the cloudflare. Then when I use the diagnostic center it gives the follow error:

> # Check site speed (TTFB) : slow_ttfb_on_cache - The response was slower than 800ms and the requested resource is cacheable on Cloudflare.

I don’t understand what I need to do actually. I read the help document about page rules, but I don’t understand what rule I need to create for this error.

Thanks for the help.

It sounds like cacheable files are not being cached by Cloudflare.

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@sdayman Thanks for the help but in the page rules I don’t have the Cache Everything section to choose.

That would be an opposite problem. The Overview section mentions the server sending cache-control headers. Such headers can disable caching at Cloudflare.

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Oh my bad… I’m dumb ahah after all, this option exists on cloudflare, I didn’t see it.
Thanks for the help.

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