How to configure Spring boot for work with two databases?

Question

I am using Spring Boot 2.X with Hibernate 5 to connect two different MySQL databases (Bar and Foo) on different servers. I am trying t

Answer 1

Two databases (aka "catalogs") on the same server? Use only one connection. Then reference thus:

Foo.table1
Bar.table2

Use that syntax wherever you would have a simple table name.

Different servers

It gets messy if the data is not in the same machine. A couple of ideas:

• Fetch the data from each catalog, then manipulate in application code. The framework probably has no hooks for doing anything to both servers at the same time.
• Use MariaDB and its FEDERATEDX Engine.