This long-form deep dive unpacks how ForkMyFolio’s backend turns a simple personal portfolio into a multi-user, slug-driven, production-ready platform built on Java 21 and Spring Boot 3. Updated: December 4, 2025 Tech Stack: Java 21, Spring Boot 3, Spring Security, JPA, Docker What You’ll Learn Layered Spring Boot Architecture How controllers, services, repositories, DTOs, and mappers fit […]