Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm reporting to you from Los Angeles, where my family and I have gone for my daughter's spring break. We're going to survey some prospective colleges and we're going to Disneyland. Needless to say, I'm doubly glad to have all this cool stuff to read this week; I can really savor each article! Let's dive in!

• Context Propagation with Project Reactor 1 - The Basics
• Introduction to Grafana Loki
• JDK 20 Release Notes
• Not Spring Boot, per se, but this is interesting if you're developing against Kubernetes and want a quick introduction: Lightweight Kubernetes Distributions
• Run a Spring Boot Application in AWS Lambda
• SAML with Spring Boot and Spring Security
• Spring Boot 2.7.10 available now
• Spring Integration for AWS 3.0.0-M2 and Spring Cloud Stream Kinesis Binder 4.0.0-M1 Available
• Spring Kafka: Configure Multiple Listeners on Same Topic
• Spring Modulith 0.5.1 released
• …

This post is a part of a series:

1. The Basics
2. The bumpy road of Spring Cloud Sleuth
3. Unified Bridging between Reactive and Imperative

Spring Boot 3 and Spring Framework 6 brought us a unified and consistent way to enable Observability in applications that use Micrometer. The evolution from Spring Cloud Sleuth to Micrometer, along with the Observation API and Micrometer Tracing, made us consolidate various approaches to context propagation. In this blog post series, we aim to explain how we came to support context propagation in Project Reactor to meet the needs of imperative libraries. By…

Dear Spring community,

Today I'm excited to share with you news that Spring Integration extension project for AWS and AWS Kinesis Binder for Spring Cloud Stream have finally been moved to AWS Java SDK v2, their respective milestones 3.0.0-M2 & 4.0.0-M1 are available from Spring Milestone repository.

I cannot tell that this was a pleasant work to do because it has turned to be not just a plain dependencies upgrade and namespace renaming. The whole AWS SDK API was changed to more modern Java style, including CompletableFuture composition and Stream API, lambda-style configuration, generated…

I'd like to announce the availability of Spring Modulith 0.5.1. The release primarily contains an important bug fix (the spring-modulith-runtime module accidentally contained a Logback configuration file only intended for test usage) and the usual upgrade to the latest Spring Boot version. Find more information in the full changelog, as well as reference documentation.

In case you are wondering about what the project is all about, Voxxed Days Zurich have published "Spring Modulith – Spring for Architecturally Curious Developers":

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.1.0-M2 has been released and is now available from https://repo.spring.io/milestone.

This release includes 81 enhancements, documentation improvements, dependency upgrades, and bug fixes. Notable new features include:

• Auto-configuration for Spring Authorization Service
• Improved Testcontainers integration
• Improved auto-configuration for Spring for GraphQL

Please see the release notes for more details and upgrade instructions.

Thanks to all those who have contributed with issue reports and pull…

On behalf of the team and everyone who has contributed, I’m happy to announce that Spring for Apache Pulsar 0.2.0 has been released and is now available from Maven Central.

This is the second GA minor release of the framework. Although 0.2.0 still lives in the experimental Spring projects it is in the process of moving into the main Spring projects as follows:

• The core will move into spring-projects/spring-pulsar (targeting mid-April)
• The autoconfiguration will move into spring-projects/spring-boot (targeting the Spring Boot 3.2.0 release)
• The binder will move into spring-cloud/spring-cloud-stream (targeting the SCSt 4.1.0 release)
…

I am excited to announce the releases of versions 1.5.4, 2.0.3 and 2.1 M1 of Spring HATEOAS. The bug fix releases primarily ship dependency upgrades, including one to the latest Spring Framework 5 and 6 releases which include fixes for a CVE. The 2.1 milestone includes a couple of new features, such as:

• Property metadata for forms now also considers JSR-03's @Size annotation – #1920
• Introduction of SlicedModel, a simplified version of PagedModel to navigate slices but not calculate a total – #1856

For more information, please check out the full changelogs on GitHub.

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 2.7.10 has been released and is now available from Maven Central.

This release includes 34 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

Java 20 Support

Following the GA release of Java 20 earlier this week, Spring Boot 2.7.10 adds support for Java 20.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter…

On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.0.5 has been released and is now available from Maven Central.

This release includes 40 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

Java 20 Support

Following the GA release of Java 20 earlier this week, Spring Boot 3.0.5 adds support for Java 20.

How can you help?

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask on stackoverflow.com using the spring-boot tag or chat with the community on Gitter…