admin-ajax.php requests to be cached using Varnish
We all know that the site loading speed depends a lot on Admin-ajax.php. Immaterial of the Heartbeat or any other setup we do on server side, it takes humongous time when loading on client side any how.
Also i read there is a solution to cache this Varnish config so as to help in reducing site load time.
This would be beneficial for all customers @ Cloudways as it would reduce there load time drastically.
Also if you see in any clients Relic stats these ajax requests are on top of the list in consuming resources on the server side as well.
A small caching can make anyone's site load time below 2 sec. :)