Is it possible to keep a database and a website on one VPS? What problems might this cause in the future?

Question

Network administration

I plan to keep the database not highly loaded and the site on the same VPS.
Could this cause problems in the future?
As far as I know, inexpensive tariffs limit traffic and its speed.

Answer 1

If the project is not highly loaded, there will hardly be problems.
The main thing is to configure the database so that it does not take up all the memory and leave the site a little.
If the database is local, the traffic to the database will not be counted, it is also local :)
But the site traffic will be counted.

Answer 2

99 percent of sites live on the same server, there can be a million or more problems