Why can it be that vps seems to go into hibernation after downtime?

Question

Nginx

We don't know how to solve the problem. We use a fairly good tariff for VPS, on which the site is spinning with almost no traffic and we observe such that sometimes you go to this site and it loads only after 10-15 seconds of inactivity. the same with the administration panel, which is also spinning on this site.

It feels like the server is going to sleep and when you wake it up it wakes up within a certain number of seconds and after that the site loading becomes normal from any device, from any computer. And if we often visit the site, then the site will always load normally. And if you don’t log in all day, then this is how the delay happens.

It's just not clear where to dig. It seems to be clean in the logs. Or what to look for?

Answer 1

Kick the hoster, if the server administration panel lags, then this is no longer your fault
ps Is swap enabled and is there a strong waste of RAM that that swap is being used to the fullest?

Answer 2

Tell me, is there a caching system on the site?
A similar scenario can occur if the initial data is generated for a long time and stored in the cache, and after generation it is retrieved from the cache and displayed.

Answer 3

Could be overselling.
Maybe caching is configured incorrectly.
in any case, we need logs of the site, the VPS itself.