Dear Spring Batch community,

On behalf of the team and all contributors, it is my pleasure to announce that Spring Batch 4.3 is now generally available from Maven Central!

This release comes with a number of new features, enhancements, and dependency updates. You can find the complete list of changes in the release notes, but here are the major highlights:

• Java records support
• GraalVM support
• New synchronized ItemStreamWriter
• New JpaCursorItemReader Implementation
• Performance improvements in MongoItemWriter and RepositoryItemWriter
• And more!

These features and enhancements have been…

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's already nearly November in this crazy rollercoaster ride that is 2020. Crazy.

We've got a ton of stuff to get to so let's waste not a second more.

• Spring Framework 5.3 goes GA This is a huge release, and the most important thing we'll look at today. Go read this post first. This release includes a ton of new features!
• A Bootiful Podcast: Optic CEO Aidan Cunniffe on OpenAPI, contract testing, and so much more
• I loved this case study that talks about how VMware (my employer) uses Kotlin Case Studies: VMware - Kotlin Multiplatform Mobile
• Case Study: Aggregator Function and Processor
• Check out my DevFest Romania presentation - Bootiful Kotlin
• The Maven Daemon is kind of like the Gradle deamon in that its a long-running process (but one compiled using GraalVM) that can greatly speed-up the use of Apache Maven…

Dear Spring community,

On behalf of the Spring Framework team and our contributors, it is my pleasure to announce that Spring Framework 5.3 is generally available from repo.spring.io as well as Maven Central!

• What's New in Spring Framework 5.3
• Upgrading to Spring Framework 5.3

Spring Framework 5.3 requires JDK 8 or higher and specifically embraces JDK 15 as the latest OpenJDK release, e.g. with binding support for record classes. As the last feature branch of the 5.x generation, the 5.3.x line is set up for an extended support phase, including JDK 17 LTS next year.

The immediate Spring Boot 2.4 and next year's Spring Boot 2.5 release will be based on this framework generation, as well as the incubating support for Spring native executables on GraalVM…

Dear Spring Community,

I am happy to announce the 4.8.1 release of the Spring Tools 4 for Eclipse, Visual Studio Code, and Theia.

quick reminder

• the Eclipse-based distribution of the Spring Tools 4 requires a JDK11 (or newer) to run on
• the Eclipse-based distribution ships with an embedded JDK15 runtime, no need to install or configure a specific JDK to run the IDE on anymore

additional changes and fixes

• (Spring Boot) new: Added support for Spring Boot multi-document properties files (#533)
• (Spring Boot) fixed: Support escaping of map keys with '[]' in Spring Boot property yaml files
• (Spring Boot) fixed: Tolerate '.[' for map navigation in .properties file
• (Eclipse) improvement: support container image creation and container deployment of Spring Boot apps without maven wrapper
• (Eclipse) improvement: better process label for live hovers from boot apps running in docker
• (Eclipse) improvement: allow docker-deployed boot apps to find each other (via simple network setup inside of docker)
• (Eclipse)…

On behalf of the team and everyone who has contributed, I am pleased to announce that Spring Framework 5.2.10 and 5.1.19 are available now.

Spring Framework 5.2.10 includes 27 fixes and improvements. Spring Framework 5.1.19 includes 16 selected fixes and improvements.

Stay tuned for Spring Framework 5.3 GA and follow-up Spring Boot releases 2.1.18, 2.2.11, 2.3.5, and 2.4.0-RC1!

Project Page | GitHub | Issues | Documentation

This article is part of a blog series that explores the newly redesigned Spring Cloud Stream applications based on Java Functions. In this episode, we are investigating the Aggregator function and its relationship with the Splitter function. We will see how we can customize the default behavior. We will also take a look at the importance of configuring a shared message store for the aggregator.

Here are all the previous parts of this blog series.

• Introducing Function Based Streaming Applications

• Function Composition with Streaming Applications

• How to Build a Supplier and Source Application

• How to Build a Consumer and Sink Application

• Build and Run a Simple Stream Application

• Case Study: HTTP Request Function and Processor

• Case Study: File Source and MongoDB Sink

• Case Study: Relational Database Source and File Sink

• Case Study: Remote File Ingest with Spring Cloud Data Flow

…

Hi, Spring fans! In this installment Josh Long (@starbuxman) talks to Optic (@UseOptic) CEO Aidan Cunniffe (@aidandcunniffe) about OpenAPI, contract testing, and so much more

Get the Spring

Hi Spring fans! Welcome to another installment of This Week in Spring! How're things? It's been unseasonably warm here in San Francisco so I am writing this from my balcony with a warm cup of coffee and hope in my heart. It is still very hard to believe we're near Halloween, though! Crazy how time flies. There's lots of good stuff to look at this week so let's get to it! Hopefully you can enjoy this week's news from some warm, safe and healthy spot in your life, too.

• A Bootiful Podcast: DataStax's Patrick McFadin on DataStax Astra, Cassandra, Cassandra data modeling patterns, and more
• A tutorial on Batch and REST
• History of Open Source and Free Software: Dirk & Swap: Conversations on Open Source
• Incubator support for Spring and GraphQL
• Premiering: Bootiful Kotlin
• Proposed schedule for JDK 16
• Spring Authorization Server 0.0.2 available now
• Spring Boot 2.4.0-M4 available now
• Spring Data 2020.0 RC2 out now
• Spring Integration 5.4 Release Candidate 1 Available
• Spring Security: Delegating authorization checks to bean methods
• …

On behalf of the team and everyone that contributed, I am pleased to announce that the fourth milestone of Spring Boot 2.4 has been released and is available from our milestone repository.

This release closes 145 issues and pull requests. Thanks to all those who have contributed with issue reports and pull requests.

Highlights of this milestone include:

• Failure Analyzer improvements
• Ability to publish Docker images generated by the Maven and Gradle plugins
• Redis cache metrics exposed via Micrometer
• Numerous dependency upgrades

For a complete list of changes and upgrade instructions, please see the Spring Boot 2.4 Release Notes on the wiki and the updated reference documentation…