Accessing multiple databases in enterprise applications can be a challenge. With Spring it is easy enough to define a common data source, but once we introduce multiple data sources things get tricky.

When Spring Boot encounters this annotation, it inspects the project and its dependencies to see which resources it might be able to auto-configure. For example, if Spring Boot realizes the project ...

Applications that must be tested against various back-end resources, including databases and queues. However, despite being an advanced feature, Spring profiles are not a difficult concept to master.