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.

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

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 Specifically, he demonstrates how to update outdated Mockito usage — migrating from the ...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

GraphQL, Java, and Spring: The Latest Features by Rossen Stoyanchev @ Spring I/O 2024

Sunday April 27th, 2025 by Bjoern in Enterprise Software, Software

AsyncAPI & Springwolf – Automated Documentation (and more) by Raphael de Lio @ Spring I/O 2024

Sunday April 20th, 2025 by Bjoern in Enterprise Software, Software

About the Roles to Assume in Software Development

Software engineer Patrick Dubroy recently wrote this interesting article about five different hats to put on when thinking about and working with code - and much more importantly - the other people involved in the process. While each individual engineer's might differ slightly (though the most important one, in my opinion, the teaching hat, is something fairly universal), the key point is: You're not just coder. You're not an automaton merely producing code. In fact, these days, with LLMs and generative AI, ...

Sunday April 13th, 2025 by Bjoern in Entrepreneurship, Software

BuildPlan Maven Plugin

BuildPlan Maven Plugin allows you to inspect the lifecycle of your Java project. Michael Simons recently published this overview on how to use that plugin to display your Maven build plan and execution order

Sunday April 6th, 2025 by Bjoern in Enterprise Software, Software

Björn Wilmsmann

my blog. for you.

Let’s talk digital.