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I test my website in GTmetrix and this website get this suggestion that

Add Expires headers

I search on the internet and found this answer but this solution does not work for me.When I try to fix such as up link get error that this output cache exist. enter image description here

Test My website in GTmetrix

I set http Response Header such as blow image but does not solve. enter image description here

Community
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hmahdavi
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1 Answers1

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Output cache is server side caching. The "Add Expires headers" you are receiving is about browser caching. This article describes how to set this so browsers will cache the resources.

Jeroen
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    I checked https://www.travelenter.com/Content/Travelo/images/logo.png and it sets Cache-Control:"no-cache,max-age=86400" in the response header. The max-age is set correctly but i think you need to get rid off the no-cache piece. – Jeroen Dec 15 '16 at 16:23