https://javapro-en.svenruppert.com/authors/julius-mischok/Recent content in Julius Mischok on JAVAPRO InternationalHugoen-USWed, 21 Jan 2026 07:00:03 +0000https://javapro-en.svenruppert.com/test-your-tests-mutation-testing-in-java-with-pit/Wed, 21 Jan 2026 07:00:03 +0000https://javapro-en.svenruppert.com/test-your-tests-mutation-testing-in-java-with-pit/<h2 id="beyond-code-coverage">Beyond Code Coverage</h2> <p>Automated tests have become a standard component of professional software development. Whether through classic unit testing or a fully test-driven development (TDD) workflow, tests help to ensure that applications are correct, maintainable, and refactorable. Most development teams track code coverage using tools such as JaCoCo and integrate these metrics into their CI/CD pipelines. At first glance, this seems sufficient: high test coverage and we are safe – right?</p>https://javapro-en.svenruppert.com/high-speed-jpa/Wed, 31 Dec 2025 07:00:02 +0000https://javapro-en.svenruppert.com/high-speed-jpa/<p>JPA sometimes carries the stigma of being “too slow for production.” Yet in countless projects, it has quietly powered reliable enterprise systems at scale. The truth is more nuanced: JPA itself is not the bottleneck — but the way we use it can turn convenience into catastrophe. In this article, we’ll explore why green tests can hide critical performance problems, and how a handful of practical techniques can transform JPA from a suspected culprit into a trusted high-speed partner.</p>