How to sync user metadata of android app?

Question

Android

In the process of creating his first online game.
There was a question about the synchronization of game data: for example, I have some progress, experience points, levels (passed and their statistics on points). How to make the data stored in the database on the server? What services and ways to transfer data from their phone to the server to use? And how to set up a connection and transfer inside the APK?

I would be grateful if you can provide links to relevant information. Thanks in advance.

Answer 1

google it "simple firebase database example"
You will have to raise an instance of this service (if the quota is exceeded - for a fee) or learn everything more deeply and make your bike for the backend.

Answer 2

Such information can be stored in Google play games services.