What Does The Spring Boot "debug" Config Property Set?

Question

If I configure my Spring Boot web app with the following property in my application.yaml config file:

debug: true

I've noticed that my logging config gets ignored and everything is set to a DEBUG level. Makes sense.

Does debug=true affect anything else though? Or is this simply a logging thing?

Answer 1

From the documentation at https://docs.spring.io/spring-boot/reference/features/logging.html#features.logging.console-output :

you can also specify debug=true in your application.properties.

When the debug mode is enabled, a selection of core loggers (embedded container, Hibernate, and Spring Boot) are configured to output more information.