The spring.http.log-request-details configuration property introduced in M3 has been removed in favour of the new logging groups support. If you defined the older property, you should use logging.level.web=DEBUG instead.

Spring Data includes repository support for JDBC and will automatically generate SQL for the methods on CrudRepository. Spring Boot will auto-configure Spring Data’s JDBC repositories when the necessary dependencies are on the classpath. They can be added to your project with a single dependency on spring-boot-starter-data-jdbc. For complete details of Spring Data JDBC, please refer to the reference documentation.

The following metrics are now available as core metrics when applicable:

• Kafka consumer metrics

• Log4j2 metrics

Apart from the changes listed above, there have also been lots of minor tweaks and improvements including:

• @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT) can now generate a separate random port for the management server.