question about url

When i use google pagespeed i find the following url in: Use browser caching, but i don't know where is belongs to.
https://viasdykttnazvk44ziglzjg3me.apps ... om/graphql
I hope someone knows what it is and what is does.

Chris

You can add a couple of lines to your .htaccess file to perform basic client side cache.

Here's one link from stackoverflow: https://stackoverflow.com/questions/185 ... de-caching