spring | Björn Wilmsmann

Let’s talk digital.

I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Spring Boot 4 & Jackson – A Migration Guide

One of the more significant library updates that come with Spring Boot 4 is Jackson 3, which is the default JSON processing library for Spring Boot. If you're using Jackson heavily in your application, particularly when it comes to customising its behaviour, chances are you'll need to adapt your code to the new version To help you with this transition, software engineer and Spring developer advocate Dan Vega has published this article on the subject of Jackson 3 in Spring Boot 4: JsonMapper, ...

Sunday March 8th, 2026 by Bjoern in Enterprise Software, Software

Björn Wilmsmann

my blog. for you.

Let’s talk digital.

Java Meets Typescript: Full-Stack Web App Development With Spring Boot and React by Marcus Hellberg @ Spring I/O 2024

Continuations: The Magic Behind Virtual Threads in Java by Balkrishna Rawool @ Spring I/O 2024

Spring Boot Code Structure: Package by Layer vs Package by Feature by Dan Vega

Spring Boot 4 & Jackson – A Migration Guide

Spring for Apache Kafka the Advanced Features by Tim Van Baarsen & Kosta Chuturkov @ Spring I/O 2025

Unlocking the Unknowns: Cryptography Essentials for Spring Developers by Laurentiu Spilca @ Spring I/O 2025

Life With Spring Boot Inside a Monorepo by Fabio Mangione / Peter Laird @ Spring I/O 2025

Improving Spring Boot Test Efficiency by Sergei Chernov @ Spring I/O 2025

Selling Maintainability by Tom Hombergs @ Spring I/O 2025

Modular RAG Architectures With Java and Spring AI by Thomas Vitale @ Spring I/O 2025