The latest version of Spring Boot is 2.4.4 available now !!

Overview

In this article, we begin exploring what change in Spring Boot latest version

What's new in Spring Boot 2.4.4

Spring Boot 2.4.2 has been released and is now available from repo.spring.io and Maven Central. This release includes 60 bug fixes, documentation improvements, and dependency upgrades.

Spring Boot 2.4.2 Release Date :

Mar 18, 2021

Download :

Source code (zip) Source code (tar.gz)

Dependency Upgrades

Upgrade to AppEngine SDK 1.9.87 #25623
Upgrade to Byte Buddy 1.10.22 #25624
Upgrade to Dropwizard Metrics 4.1.18 #25625
Upgrade to Ehcache3 3.9.2 #25626
Upgrade to Hibernate 5.4.29.Final #25627
Upgrade to Infinispan 11.0.10.Final #25628
Upgrade to Jakarta Mail 1.6.6 #25629
Upgrade to Jetty 9.4.38.v20210224 #25461
Upgrade to Jetty Reactive HTTPClient 1.1.6 #25630
Upgrade to jOOQ 3.14.8 #25631
Upgrade to Kotlin 1.4.31 #25632
Upgrade to Kotlin Coroutines 1.4.3 #25719
Upgrade to Lettuce 6.0.3.RELEASE #25720
Upgrade to Maven Invoker Plugin 3.2.2 #25633
Upgrade to Micrometer 1.6.5 #25543
Upgrade to MongoDB 4.1.2 #25634
Upgrade to Netty 4.1.60.Final #25635
Upgrade to OAuth2 OIDC SDK 8.36.1 #25636
Upgrade to Postgresql 42.2.19 #25637
Upgrade to R2DBC Bom Arabba-SR9 #25638
Upgrade to Reactor 2020.0.5 #25539
Upgrade to Spring AMQP 2.3.6 #25647
Upgrade to Spring Batch 4.3.2 #25579
Upgrade to Spring Data 2020.0.6 #25547
Upgrade to Spring Framework 5.3.5 #25541
Upgrade to Spring HATEOAS 1.2.5 #25545
Upgrade to Spring Integration 5.4.5 #25646
Upgrade to Spring Kafka 2.6.7 #25578
Upgrade to Sun Mail 1.6.6 #25639
Upgrade to Tomcat 9.0.44 #25640
Upgrade to Undertow 2.2.5.Final #25641

This release includes 60 bug fixes, documentation improvements, click here to know more

What's new in Spring Boot 2.4

Spring Boot 2.4.0 has been released and is now available from repo.spring.io and Maven Central.

This update contains 2.4.0 is the first generally available Spring Boot release that uses the new versioning scheme. Please note that the version is 2.4.0 rather than 2.4.0.RELEASE that you may have expected based on previous releases. This release adds a significant number of new features and improvements

Spring Boot 2.4.0 Release Date : NOVEMBER 12, 2020

Spring Boot 2.4.0 uses Spring Framework 5.3 and has support for Java 15 while also remaining compatible with Java 11 and 8. listed below features/enhancements as part of the Spring Boot 2.4.0.

Docker/Buildpack Support:

Publishing Images The Maven spring-boot goal:build-image plugin and bootBuildImage task of the Gradle plugin can now publish the image created in a Docker registry. For more information on configuring plugins for publishing images, see the Maven and Gradle plugin documentation.

Authenticating You can now use a private authenticated Docker registry to build your builder or run an image by using Spring Boot's buildpack support. The token-based authentication is enabled. Username/Password.

Config File Processing (application properties and YAML files):

This release allows layered jars and provides layertools by default. This should improve the efficiency of the created image using the out-of-the-box build pack and allow you to take advantage of that feature when building a custom Dockerfile.

Volume Mounted Config Directory Trees:

The new spring.config.import property can be used to import configuration trees that are widely used with Kubernets. The configuration tree is an alternative way to have key/value pairs. Each pair is declared in its own file, with the file name forming the property key, and the contents of the file giving the value.

Properties loaded from the config tree have newline characters that have been trimmed by default.

Startup Endpoint:

A new endpoint for the startup actuator is now available that shows information about the startup of your applications. The endpoint will help you recognize beans that take longer than expected to start.

This work builds on the device startup monitoring feature recently added to Spring Framwork 5.3. You can read more about this feature in the Spring Framework Reference Guide.

Origin Chains:

The Origin interface has been modified to a new getParent() method. This allows us to provide a full origin chain that can show exactly where an item originated from.

For example, you may want to use spring.config.import in your application.properties to import a second file. The Origin of Properties loaded from this second file will have a parent that will point back to the original import declaration.

You can try this yourself by looking at the endpoints of the actuator/env or the actuator/configprops actuator endpoints.

Dependency upgrades

Spring AMQP 2.3
Spring Batch 4.3
Spring Data 2020.0
Spring Framework 5.3
Spring HATEOAS 1.2
Spring Integration 5.4
Spring Kafka 2.6
Spring Retry 1.3
Spring Security 5.4
Spring Session 2020.0