I'm sure you've noticed that for many servers, the website loading time is quite long if you're the first visitor for a couple of hours. Do you have any idea why this is the case (is it just server cache?) and how to make the site fast even for that first visitor? Let's take a normal LAMP setup in this case. Thanks for your help!
There lots of potential causes. There's almost certainly not just one single reason.
A few possibilities:
Mitigation strategies of course depend on what the actual cause is. But a few things that should normally be done: