Hi, Spring fans! Welcome to another installment of This Week in Spring! It's November 14th, and you know what that means? NINE MORE DAYS until Spring Boot 3.2 drops (on the day of the US holiday of Thanksgiving, no less)!

Some key features include:

• virtual threads
• initial CRaC support
• more sophisticated observability with Micrometerio
• JdbcClient, RestClient
• ActiveMQ Testcontainers/ Docker Compose support
• Kotlin 1.9.0

I can't wait for the next release. I've been playing with it for months. It builds on the strenghts of Spring Boot 3.0 and 3.1. 3.0 brought GraalVM native images, and 3.…

Hi, Spring fans! In this week's installment I talk to Azul Deputy CTO Simon Ritter (@speakjava), recorded live at Devoxx Belgium 2023!

Hi, Spring fans!

Can you believe we've already turned the calendar page to November? Time sure is a swift developer, deploying months as if they were minor versions in an ever-evolving application. As we adjust our clocks to fall back, waving a reluctant goodbye to daylight savings time, the encroaching evening arrives with a brisk efficiency. Yes, it's dark outside, a bit too early for my liking, if I'm honest. The shortened days remind us that while we may not be in control of the celestial clock, we do have the power to harness the hours we're given. This is the perfect time to settle in…

In Spring Boot 3.2.0, we're adding the ability for embedded web servers to hot-reload SSL certificates and keys. That means you can rotate your SSL trust material without restarting your application. Hot reloading is supported for Tomcat and Netty embedded web servers.

Let's see that in action!

First, we're going to create our SSL private key and matching certificate using OpenSSL:

mkdir certs
cd certs
openssl req -x509 -subj "/CN=demo-cert-1" -keyout demo.key -out demo.crt -sha256 -days 365 -nodes -newkey rsa 

This creates a private key stored in certs/demo.key and a matching (self-signed) certificate with the common name "demo-cert-1" in certs/demo.crt…

Hi, Spring fans! In this installment Josh Long talks to Oracle vice president Thomas Wuerthinger about the project he created and leads, GraalVM. This was recorded live from Devoxx Belgium 2023!

Reactor 3.6.0 is coming and going to be GA on November 14. This blogpost describes new features that are included in this upcoming release!

Virtual Threads support

Today, everyone talks about Java 21 and Project Loom. The Project Reactor team hears that and sees value in that project within our ecosystem. With this upcoming release, we introduce support for the VirtualThread implementation.

Why is it handy?

Let's consider the following code sample:

package io.projectreactor.samples;

import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.stream.Stream;

import reactor.core…

Hi Spring fans, and Happy Halloween from the Spring team to those who celebrate!

I hope your evening is fun and your day free of scary bugs!

My friends, we've got some interesting stuff to look at this week so let's dive right into it.

• A Bootiful Podcast: Mr. Spring in Action, Craig Walls
• Spring Cloud Stream Applications 2022.0.0 available now
• Spring Statemachine 4.0.0-M1 is now available
• laech/java-stacksrc: Decorates stack traces with source code snippets. - this is super cool. It's a way to decorate stack traces with source code snippets.
• Blog: Introducing ingress2gateway; Simplifying Upgrades to Gateway API
• Blog: Plants, process and parties: the Kubernetes 1.28 release interview
…

Hi, Spring fans! This week, I'm joined by one of my longtime heroes and fellow Disney fans, Craig Walls (@habuma). He wrote the most popular book on Spring, Spring in Action, while helping the world stay connected with efforts like Spring Social.

This episode was recorded live at SpringOne 2023, in sunny Las vegas, NV! Did you miss it?

Other parts in this blog series

Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications

Part 2: Producer Initiated Transactions in Spring Cloud Stream Kafka Applications

Part 3: Synchronizing with External Transaction Managers in Spring Cloud Stream Kafka Applications

Part 4: Transactional Rollback Strategies with Spring Cloud Stream and Apache Kafka

Part 5: Apache Kafka’s Exactly-Once Semantics in Spring Cloud Stream Kafka Applications

In this last part of this blog series, we dive into a relatively new design pattern first proposed by Chris Richardson but seeing it from the perspective of Spring Cloud Stream. We will see what the outbox pattern is, how it works, and a few strategies to adapt when using Spring Cloud Stream and Apache Kafka. See the descriptions here…