my blog. for you.

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.

Null Safety in Java with JSpecify and NullAway by Sébastien Deleuze @ Spring I/O 2025

The Ultimate Showdown of Database Migration Tools by Pasha Finkelshteyn / Anton Arhipov @ Spring I/O

Sunday June 29th, 2025 by Bjoern in Enterprise Software, Software

Code Smarter, Not Harder: AI-Powered Dev Hacks for All by Dan Vega @ Spring I/O 2025

Sunday June 22nd, 2025 by Bjoern in Enterprise Software, Software

Demystifying Spring Boot Magic by Patrick Baumgartner @ Spring I/O 2025

Sunday June 15th, 2025 by Bjoern in Enterprise Software, Software

Say Goodbye to Microservices, Say Hello to Self-Contained Systems by Simon Martinelli @ Spring I/O

Sunday June 8th, 2025 by Bjoern in Enterprise Software, Software

Spring I/O 2025 Keynote

Sunday June 1st, 2025 by Bjoern in Enterprise Software, Software

On HTML Attributes and Properties

In his insightful article, HTML attributes vs DOM properties, Jake Archibald delves into the often-overlooked distinctions between HTML attributes and DOM properties. While modern frameworks often abstract much of this complexity, a clear understanding of these differences is invaluable, especially when working directly with the DOM or developing custom elements.

Sunday May 25th, 2025 by Bjoern in General

Testing Spring Boot @ConfigurationProperties

Making Configuration Properties Testable in Spring Boot One of Spring Boot’s most elegant features is its support for binding externalised configuration to strongly typed Java beans via @ConfigurationProperties. This makes managing application settings both expressive and maintainable. However, as with any other part of our code, we should ensure that these properties are tested — especially when they encapsulate non-trivial validation or logic. This Baeldung article on "Testing @ConfigurationProperties in Spring Boot" provides a comprehensive overview of how to do just that. The ...

Sunday May 18th, 2025 by Bjoern in Enterprise Software, Software

Secure, Test, Repeat: A Guide to Spring Security Integration Testing by Laurentiu Spilca @ Spring I/O 2024

Sunday May 11th, 2025 by Bjoern in Enterprise Software, Software

Automating Java Code Migration with OpenRewrite

Software development constantly evolves, and so do the libraries and frameworks we rely on. Keeping codebases up-to-date is crucial for long-term maintainability but often feels tedious and error-prone when done manually. Fortunately, tools like OpenRewrite offer an elegant solution: automating large-scale code changes in a reliable, repeatable way. In a recent article, Philip Riecks walks through a practical example of how OpenRewrite can be used to modernize Java code. Specifically, he demonstrates how to update outdated Mockito usage — migrating from the ...

Sunday May 4th, 2025 by Bjoern in Enterprise Software, Software

Björn Wilmsmann

my blog. for you.

Let’s talk digital.