I currently have a domain pointing to the IP of a server I want to get rid of.
On another IP, I have my server set up entirely, and I now want to (temporarily) get all visitors to this new server, without them noticing a difference in url.
I am aware I can just change the A record of my domain's DNS, but since I want to perform a temporary test for a few hours, I need the change to be immediate. I understand that A-record changes can take quite a while (due to the TTL that I cannot change) before being propagated to all users.
Is there any other solution on how to do that? Can something like this be done with a rewrite?