system
Given the following post, respond as if you're commenting on Reddit:
human
Is multiple databases logical?

very noob question. But let's say some has these features; the ability to send and display currency, a user's profile info (name, photo, uploaded photo/video), and a catalog of videos accessible throughout the platform. Would multiple SQL databases and a CDN make sense? This is a general question but I simply chose to highlight the specifics.
gpt
It depends on the scale. Using separate databases (and microservices) for all of those concerns allows you to upgrade and scale them independently. This means that e.g. if video streaming is very popular, it won't impact currency transactions, for example, because the infrastructure is separate.