Browser caching for SEO - Hinders updates

[Cocoonfxmedia]

Hi Guys

Just seeking some advise.  We know Google is very keen about site speed and the one of the best ways to manage this is to cache images use CDNs etc.. However what I am finding is that we have rapid site speed but any new updates take a few refreshes or we have to wait for the ISP to clear their DNS for the updates to show.

I have put the meta tag for non-caching and on cPanel I have developer mode active on the caching sessions which in theory will not store anything in the cache for 6 hours.

Does anyone know of anything else which can force a wordpress site on an update or image/post/page or datasbase for the browser to be flushed? I think possibly this will only be good as other users browsers may have similar issues.