Spring Boot is a highly active project with contributors from all around the World. At the time of writing, the Spring Boot 2.1.0 milestone is set and is under active development. The following are some of the features proposed for that Spring Boot minor-version release:
- Support for embedding Tomcat 9: Tomcat 9 has introduced a lot of features, but Spring Boot 2.0 still only supports up to Tomcat 8 by default. With this support, Spring Boot 2.0 will be able to offer features such as Servlet 4.0 API, JSP 2.4, WebSocket 2.0, and so on.
- Auto-configuration of JettyMetrics: Micrometer has metrics support for Jetty, which is planned to be included in the next release of Spring Boot 2.0.
- Support for embedding Undertow 2.0: Undertow 2.0 has a lot of features, such as Servlet 4.0, but is not yet supported by Spring Boot 2.0.
- Support for Hibernate 5.3.0 and JPA 2.2: Hibernate 5.3.0 and JPA 2.2 are the latest releases for the persistence layer, which needs to be incorporated into Spring Boot 2.0.
- Actuator endpoint for listing and clearing cache: The actuator endpoint is intended to return caches per context and provides a delete operation to clear the cache.
- Allowing @ConfigurationProperties binding on interfaces: At the moment only a class can be used to bind properties from a configuration properties file with a @ConfigurationProperties annotation. This feature will allow interfaces with methods with property names to be mapped to their corresponding property.
- Having consistent auto-configuration behavior for default connection of data sources: Currently, behavior for default connection auto-configurations differs from data sources as such as MongoDB, Couchbase, and so on. This proposed change will make it consistent.
However, these enhancements and features are still under active evaluation and debate and can be further improved or reduced based on the collective decisions of the Spring Boot developer community.