Understanding Transaction rolled back because it has been marked as rollback-only in Spring
Spring transactions are powerful but sometimes tricky. Here's a real-world debugging story about a rollback-only error I ran into — and how to fix it.Recently, while working on a project, I encounte...
Mastering Dependency Injection in Spring Boot: Real-World Examples and Best Practices
Table of Contents
What is Dependency Injection (DI)?
How Dependency Injection Works in Spring Boot
Types of Dependency Injection
3.1 Constructor Injection
3.2 Setter Injection
3.3 Field...
Spring PetClinic Goes Global: Enhancing Accessibility with Multi-Language Support
Introduction
The Spring PetClinic application is a flagship example of Spring Boot best practices, used by developers worldwide to learn enterprise patterns. Recently, my pull request (#0c88f9) was me...
Creating Custom Constraints: Writing Your Own @NotNull Annotation
When building Java applications, especially with frameworks like Spring or Jakarta EE, validation plays a critical role. You might be familiar with annotations like @NotNull, @Size, or @Email. But wha...
Wednesday Links - Edition 2025-04-30
How ZGC allocates memory for the Java heap (22 min)📚
https://joelsiks.com/posts/zgc-heap-memory-allocation/Why Are There So Many URI Methods? (3 min)😵💫
https://poutsma-principles.com/blog/...
Sharding with SpringBoot
Understanding Database Sharding
Imagine your application has grown so popular that a single database server can’t handle all your data efficiently. Sharding is like splitting your database ...
Spring Application Advisor: Built for Spring, Designed for Java
Modern Java developers are under pressure to build faster, cleaner, and more maintainable applications. Spring has long been the go-to framework for building enterprise-level Java apps—but what if ...
📘 Top Spring Boot Interview Questions and Answers
🚀 Introduction
Spring Boot simplifies backend development by reducing boilerplate code, auto-configuring dependencies, and enabling fast delivery of production-ready applications. Whether you're pr...
api-response: Response Builder for Spring Boot APIs
githubI published my first library to Maven Central!
It’s a small utility I built to standardize API response formats when working with Spring Boot for web applications.Although it’s public, I ori...