Which subd should I choose for my service?

Question

MySQL

Hello. I'm making a toy with a microservices architecture.
I have an auth service (it’s clear from the name what it’s responsible for) now it has
its own mysql database (like every service) some kind of quick key - value storage in the format [token] - [json data user] - registration - ban system Help me choose the most suitable key - value storage in this zoo (it will have a huge load. Other services that need authorization will be connected to it) You also need an SQl database that can be easily scaled and can store at least petabytes of data.
need data storage reliability (performance is not very important)
Thank you all.

Answer 1

Use the database that you and your DBA understand best. You can take an omega fancy DBMS and, because of its lack of understanding of the details and subtleties of its settings, and just work to do business.