What is your take on these .
I was testing my website on nibbler and it says I needed to add some expire headers on a few items. So I was trying to find out how to add them or at least how to add them and came across a article advising not to use them
https://moz.com/blog/expires-headers-for-seo-why-you-should-think-twice-before-using-them
So which way is best , or does it not even really matter either way...
I am only asking as my site is 5 months old now and have not made a single sale , which is why I am trying to see what else I need to do