Moritz Halbritter
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0.5ritter.de
Moritz Halbritter
@0.5ritter.de
660 followers 320 following 140 posts
Putting bugs into Spring Boot since 2022.

Spring Boot team member | Lead of http://start.spring.io and Spring Initializr

More socials and info: https://mhalbritter.github.io/
Posts Replies Media Videos
Reposted by Moritz Halbritter
jonatan-ivanov.bsky.social
Have I mentioned that with the @micrometer.io and @projectreactor.io releases on Thursday and Friday, the release train for @spring.io Boot 4.x and @spring.io Framework 7.x has started? 😄

If you want to jump on the train: spring.io/blog/2025/09...
Screenshot of the Spring Release Calendar available at https://calendar.spring.io showing the November releases of Micrometer and Project Reactor.
November 10, 2025 at 7:10 AM
Reposted by Moritz Halbritter
snicoll.be
Please give it a try and let us know what you think! This is your last opportunity before GA on Nov 20!

spring.io/blog/2025/11...
Spring Boot 4.0.0-RC2 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 7, 2025 at 8:46 AM
Reposted by Moritz Halbritter
snicoll.be
I am happy to share that we have released Spring Boot 4.0.O-RC2.

RC2 adds some fine tuning for Spring projects that had to do a second RC as well. We've also swiftly reacted to changes in the community: Jersey released a 4.0.0 that is compatible with Jakarta EE 11 so its support was reinstated.
Spring Boot 4.0.0-RC2 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 7, 2025 at 8:46 AM
0.5ritter.de
Amazing, the Levenshtein distance is only 1.
November 7, 2025 at 7:54 AM
0.5ritter.de
Spring Boot 4.0.0-RC2 available now!

We've released Spring Boot 4.0.0-RC2, it's available on Maven Central for easy consumption. Please give it a try and report issues back to us, we really appreciate your feedback!

spring.io/blog/2025/11...

#java #spring #springboot
Spring Boot 4.0.0-RC2 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 7, 2025 at 7:30 AM
Reposted by Moritz Halbritter
devoxx.uk
Attention Devs! Want to bring your whole crew to Devoxx UK 2026?

✅ 10% off for groups of 8+

✅ 20% off for groups of 15+

Learn together, share insights & bring fresh ideas to your workplace

📅 6th & 7th May 2026 | London
🎟️ Book now → devoxx.co.uk
👩‍💻👨‍💻 Tag your teammates and start planning your trip!
October 22, 2025 at 10:11 AM
0.5ritter.de
A new feature dropped on start.spring.io!

Because you all love YAML so much, we've added radio buttons to switch the configuration format from properties to YAML. Hope you brought a ruler and don't live in Norway!
Screenshot of start.spring.io showing the new configuration section.
October 30, 2025 at 9:48 AM
0.5ritter.de
And now the @devoxx.com interview is online where I talk about Java performance, Project Leyden, GraalVM's native image and Project CRaC. Thanks a lot for having me, @frankdelporte.be!
devoxx.com Devoxx Belgium @devoxx.com · 12d
Part 5: Project Leyden, Babylon, Panama - TornadoVM

At Devoxx Belgium 2025, @frankdelporte.be took the camera and microphone to talk with several speakers and visitors: Moritz Halbritter, John Cecerralli, Christos Kotselidis, Michalis Papadimitriou 🎙️☕️

www.youtube.com/watch?v=1J_d...
Project Leyden, Babylon, Panama - TornadoVM
YouTube video by Devoxx
www.youtube.com
October 30, 2025 at 9:34 AM
Reposted by Moritz Halbritter
seb.deleuze.fr
It may not be obvious if you have not tried a #Spring Boot 4 RC yet, but I consider Spring Boot modularization as the most important enhancement that this new generation is introducing.

The Spring Boot team has just published a related blog post, this is a must read!

spring.io/blog/2025/10...
Modularizing Spring Boot
Level up your Java code and explore what Spring can do for you.
spring.io
October 28, 2025 at 5:02 PM
0.5ritter.de
We've published a new installment of our "Road to GA" blog series. This time it's about the huge modularization effort the Spring Boot team has done and which is coming in Spring Boot 4: spring.io/blog/2025/10...

#java #spring #springboot
Modularizing Spring Boot
Level up your Java code and explore what Spring can do for you.
spring.io
October 28, 2025 at 3:47 PM
Reposted by Moritz Halbritter
seb.deleuze.fr
I have updated the blog post after Spring Boot 4.0.0-RC1 release, which restores in a deprecated form the Jackson 2 auto-configuration to help migrating, and Spring Security 7.0.0-RC1 one that leverages "safe default typing".
seb.deleuze.fr Sébastien Deleuze @seb.deleuze.fr · Oct 7
I have just published "Introducing Jackson 3 support in Spring" with hopefully useful insights on Spring Boot 4 upcoming JSON support and on the migration from Jackson 2. spring.io/blog/2025/10...
Introducing Jackson 3 support in Spring
Level up your Java code and explore what Spring can do for you.
spring.io
October 27, 2025 at 9:54 AM
Reposted by Moritz Halbritter
sharatchander.bsky.social
📢Announcement 📢

#Java for the #AI World. Project #Valhalla early access build now available. Enabling new type representations for AI.

☕️ Details: openjdk.org/projects/val...
☕️ Download: jdk.java.net/valhalla/
☕️ Feedback: valhalla-devopenjdkorg
October 27, 2025 at 5:50 PM
Reposted by Moritz Halbritter
snicoll.be
I am happy to share that we have released Spring Boot 4.0.O-RC1.

This release candidate concludes our modularity efforts, migration to Jackson 3 with support for using Jackson 2 in a deprecated fashion, and more.

Please give it a try and let us know what you think!

spring.io/blog/2025/10...
Spring Boot 4.0.0-RC1 available now
Level up your Java code and explore what Spring can do for you.
spring.io
October 24, 2025 at 5:46 AM
Reposted by Moritz Halbritter
snicoll.be
On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.5.7 has been released and is now available from Maven Central.

spring.io/blog/2025/10...

#java #spring @spring.io
Spring Boot 3.5.7 available now
Level up your Java code and explore what Spring can do for you.
spring.io
October 23, 2025 at 1:21 PM
0.5ritter.de
On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.4.11 has been released and is now available from Maven Central.

spring.io/blog/2025/10...

#java #spring #springboot @spring.io
Spring Boot 3.4.11 available now
Level up your Java code and explore what Spring can do for you.
spring.io
October 23, 2025 at 8:55 AM
Reposted by Moritz Halbritter
ammbra1508.bsky.social
Thank you to everyone who joined our session on boosting Java performance with Project Leyden, Java 25, and Spring Boot! 🚀

@0.5ritter.de and I hope that you will apply the optimizations and tips we shared today. The slides we used:
www.slideshare.net/slideshow/su...

#JDK25 #SpringBoot #Performance
Supercharge your JVM performance with Project Leyden and Spring Boot
Many modern applications and tools rely on Java. Yet, their startup time and time-to-peak performance remain challenging, especially for microservices and Kubernetes workloads that require fast scaling and responsiveness. Project Leyden, an ambitious OpenJDK initiative, aims to overcome these performance bottlenecks. In this session, Ana and Moritz showed how you can take advantage of Leyden’s optimizations using Java 25 and Spring Boot. You also got practical techniques you can apply today, along with a peek into the ongoing work inside Leyden and what that means for the performance of your Java application. - Download as a PDF or view online for free
www.slideshare.net
October 9, 2025 at 2:31 PM
Reposted by Moritz Halbritter
odrotbohm.de
Thu, Oct 9th, 5:40pm – Meet the Spring Team – m.devoxx.com/events/dvbe2...

With @starbuxman.joshlong.com, @garnier.wf, @tzolov.bsky.social, @0.5ritter.de, @snicoll.be, @chemicl.bsky.social, Brian Clozel, and yours truly. ☕️🍃 5/5
Meet the Spring Team Come meet the Spring team! This year at Devoxx, many maintainers, advocates and contributors will be at the conference, and we’re delighted to meet with our users and members of the community. In this “open mic” session, you’ll have the opportunity to ask us anything about the various Spring projects, our current efforts and ideas for the future, and of course, the soon-to-be-released new generation with Boot 4 and Framework 7. Whether you’re a Spring veteran or a new user getting started with the project, you are more than welcome to join.
October 4, 2025 at 2:37 PM
0.5ritter.de
Oh yeah, a new video of one of my favorite Springfluencers!

www.youtube.com/watch?v=ep8I...

@starbuxman.joshlong.com
Resilience Features in Spring Framework 7 and Spring Boot 4
YouTube video by Coffee + Software
www.youtube.com
September 29, 2025 at 8:46 AM
Reposted by Moritz Halbritter
seb.deleuze.fr
Stable Values -> Lazy Constants
jeptracker.bsky.social JEP Tracker @jeptracker.bsky.social · Sep 26
🎓 JEP 526 moved to candidate
Title: Lazy Constants (Second Preview)
Type: feature
Component: core / lang
See openjdk.org/jeps/526
September 26, 2025 at 4:52 PM
Reposted by Moritz Halbritter
rstoyanchev.bsky.social
The next instalment of the Road to GA series about a cross-project, collaborative effort on new capabilities for HTTP service clients is now live spring.io/blog/2025/09...

#SpringFramework #SpringBoot #SpringCloud #SpringSecurity
HTTP Service Client Enhancements
Level up your Java code and explore what Spring can do for you.
spring.io
September 23, 2025 at 10:42 AM
0.5ritter.de
And Spring Boot 4.0.0-M3 is there, too.

This release includes 98 enhancements, documentation improvements, dependency upgrades, and bug fixes.

spring.io/blog/2025/09...

#spring #springboot #java
Spring Boot 4.0.0-M3 available now
Level up your Java code and explore what Spring can do for you.
spring.io
September 19, 2025 at 6:50 AM
Reposted by Moritz Halbritter
snicoll.be
On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.5.6 has been released and is now available from Maven Central.

spring.io/blog/2025/09...

#java #spring #springboot @spring.io
Spring Boot 3.5.6 available now
Level up your Java code and explore what Spring can do for you.
spring.io
September 18, 2025 at 2:40 PM
0.5ritter.de
On behalf of the team and everyone who has contributed, I'm happy to announce that Spring Boot 3.4.10 has been released and is now available from Maven Central.

spring.io/blog/2025/09...

#spring #springboot #java
Spring Boot 3.4.10 available now
Level up your Java code and explore what Spring can do for you.
spring.io
September 18, 2025 at 12:02 PM
0.5ritter.de
Java 25 support is now available on start.spring.io.
Spring Initializr
Initializr generates spring boot project with just what you need to start quickly!
start.spring.io
September 17, 2025 at 8:51 AM
Reposted by Moritz Halbritter
sambrannen.com
🍃 Spring Security and Spring Framework have released joint fixes for CVE-2025-41248 and CVE-2025-41249.

Please upgrade your Spring Security and Spring Framework dependencies accordingly.

spring.io/blog/2025/09...
Spring Security and Spring Framework Release Fixes for CVE-2025-41248 and CVE-2025-41249
Level up your Java code and explore what Spring can do for you.
spring.io
September 15, 2025 at 7:25 PM