marmo.dev
Field notes on AI, Java, open source and shipping software
Spring Boot 4.0 adopts JSpecify as its null annotation standard. Find out what changes, why it matters, and how it improves your code with four before/after examples.
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Learn the trade-offs between using interfaces and CGLIB for AOP proxying in Spring Boot applications.
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Is Lombok a bad citizen or a Superhero?
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How MarMoFin uses Spring Boot, STOMP, SockJS and Angular to push job progress and private stock alerts through Kubernetes
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Angular, Spring Boot, Kubernetes and CORS can get confusing fast. In this post, I explain when CORS actually applies, why my production setup does not need it, and how NGINX Ingress keeps frontend and backend on the same origin.
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Angular 22.1.0 was released on July 28, 2026. It's a bugfix release, but we can find some minor
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Hibernate 7.4 introduces temporal entities, auditing, and safer pagination key upgrades for Spring Data JPA developers.
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A full-stack document intelligence demo using Angular, Spring Boot, Spring AI 2.0, and Mistral OCR 4 to extract markdown, layout blocks, tables, images, confidence signals, and structured JSON.
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A quick Spring Boot 4 migration diary: moved packages, split deps, and stricter tests.
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To experiment with the latest releases of Angular and Java, I use my 'pet project', a real complex investment analysis tools. It isn'
ℹ️ Draft: Angular 22.2 is currently available as a pre-release. This post will be updated when new features are added. The development of Angular
Angular 22.0 introduces a stable signal architecture, strict modern defaults, and formal specifications for AI integration, solidifying the framework for the web scalability.
Can we build professional solutions without checking the code with Claude and Codex?
What is coming in Java 26 for developers
Master Spring annotations in 2026: from core stereotypes to new features like native resilience, virtual threads support, and null safety.
Stop wasting JVM threads on WordPress bots. Here is how to block PHP scanners at the Cloudflare, Nginx, and Spring Security levels to keep your Java logs clean.
Transitioning a legacy Java monolith to Kotlin sounds like a modern developer’s dream, but when that project relies on Hibernate and Lombok, the "100% interoperability" promise quickly unravels. This post explores the deep-rooted architectural conflicts that occur when Kotlin’s opinionated, null-sa…
Learn how to fix the “Port 8080 already in use” error in Spring Boot. Find and kill the process on Mac, Linux, or Windows and prevent future port conflicts.
Examples of API guidelines
Madness of the software building - an insider view
Which Swiss companies have public Git repositories?