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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.

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

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

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

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Spring I/O 2025 Keynote

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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 ... Read more

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

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 Specifically, he demonstrates how to update outdated Mockito usage — migrating from the ...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

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

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

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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 Read more
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