Please excuse my inexperience. I have two servers with mirror sites - I have this for fail-over when one server has an outage. My experience with changing A-records is that some ISP’s take ages to update and so I get issues with different people seeing different things - so changing A Records does not do it.
I know CF has load balancing/auto fail-over but my question is - can I set-up DNS to have two servers in a way that allows me to switch between them with zero propagation in CF - immediate switch for everyone to see? Basically this is manual fail-over.