DBMS as an application server
Here is one interesting thing about Tarantool that you've probably never thought about. Check this out.
Tarantool is the perfect solution for microservices. Write the code of your application backend right inside Tarantool and forget about annoying network delays.
And remember, this is a DBMS, so you have replication, backups, tables, primary & secondary indexes.
You can use Tarantool as the single source of truth and an app server all in one. No cache layers, no app layers, just one durable dependable solution covering almost all your backed stack.
Explore the details and find a tutorial how to start using Tarantool in this article:
https://medium.com/@rtsisyk/dbms-as-an-application-server-779402dbf485