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Total 191 deep posts

Spring Boot best practices and Spring pitfalls

Some tips to improve your Spring development

UPDATED: 2026-02-12

Spring Boot vs Quarkus in 2026

Is Quarkus a real alternative to Spring Boot? How to choose between the two?

UPDATED: 2026-02-12

Java 26 - the new features

What is coming in Java 26 for developers

UPDATED: 2026-02-09

Angular, Node, Typescript version compatibility and new features

Compatibility Matrix Angular, Node and TypeScript

UPDATED: 2026-01-25

Spring Annotations: The 2026 Essential Cheat Sheet

Master Spring annotations in 2026: from core stereotypes to new features like native resilience, virtual threads support, and null safety.

UPDATED: 2026-01-22

Lombok: The Batman of the JRE that saved Java from Boilerplate

Is Lombok a bad citizen or a Superhero?

UPDATED: 2026-01-21

Why WordPress bots keep knocking on your Java server

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.

UPDATED: 2026-01-21

How to Fix “Port 8080 Already in Use” in Spring Boot (Mac, Linux, Windows)

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.

UPDATED: 2026-01-16

The Friction Zone: Why mixing Kotlin, Java, Hibernate and Lombok is a technical debt nightmare

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-safe design meets the "anything-goes" reflection-heavy world of JPA.

UPDATED: 2026-01-16

REST API Guidelines – Real-World Examples from Swiss and Global Organizations

Examples of API guidelines

UPDATED: 2025-12-22

Slow and expensive - The Madness of software development: Overbuilt, overbudget and over it

UPDATED: 2025-10-22

Swiss companies with Git public repositories

Which Swiss companies have public Git repositories?

UPDATED: 2025-10-12

Job interviews for developers, my approach to Technical Interviews

UPDATED: 2025-10-07

Lombok - Java JDK compatibility matrix

Lombok and JDK compatibility

UPDATED: 2025-10-05

Spring Boot: Interfaces or CGLIB?

Learn the trade-offs between using interfaces and CGLIB for AOP proxying in Spring Boot applications.

UPDATED: 2025-06-21

Spring Boot Multipart Upload: Combining JSON Data and File in One Request

How to handle mixed http requests in Spring

UPDATED: 2025-04-09

Disable SSR in an Angular project

Revert an Angular project from SSR. Is SSR really necessary?

UPDATED: 2025-04-02

Migration from Kotlin to Java, notes

Steps for the migration from Kotlin to Java, notes

UPDATED: 2025-03-27

JavaScript: copy array. Deep and Shallow clone copy explained.

How to copy or clone an array in JavaScript

UPDATED: 2025-02-22

Learn Java in 15 minutes ... and call us to repair the damages for 12 months :)

The origin of the technical debt

UPDATED: 2025-02-15

Angular best UI open source components

The best components to add to your project in 2025. Better home-made or public components?

UPDATED: 2025-02-13

Send an image from the Java backend to Angular or React using REST services

UPDATED: 2025-02-12

Angular 19.2: New features

New features introduced in Angular 19.2

UPDATED: 2025-02-10

Enum Literals in Hibernate and JPA: A Surprisingly Astonishing Difference

Code review lessons. A simple question about a query challenged the online solutions.

UPDATED: 2025-02-02

Lombok and Java 23 compilation issues

Java 23 Lombok compilation error, how to fix it.

UPDATED: 2024-11-23

Angular 19.0: New features coming

New features introduced in Angular 19.0

UPDATED: 2024-09-04

Apache NetBeans - clear the cache and rebuild maven indexes

Sometimes a cleanup can fix IDE issues

UPDATED: 2024-08-24

Featured posts Articles, conferences, and deep dives

Java 17 new feature: Teeing Collector

Teeing Collector examples. A Java 17 LTS new feature!

UPDATED: 2019-03-23

Java Records, tutorial and code examples

Records in Java 14. Published in DZone.

UPDATED: 2020-01-23

The final keyword in Java

The final keyword doesnt guarantee the immutabily of your objects. Its really performant?

UPDATED: 2019-02-03

Garbage collectors for the busy Java developer (10 min, no maths ;))

(Video + Slides) JavaZone Conference

UPDATED: 2019-10-01

Initialize a HashMap in Java - Best practices

HashMap initialization and best practices

UPDATED: 2019-01-10

Spring Boot: REST controller Test example

How to test the @RestController with Spring Boot

UPDATED: 2022-02-14