javatech.hashnode.devDiscover Spring AOP: Logging, Practical Examples, and Use Cases ExplainedIf you’ve ever found yourself adding the same logging, security checks, or performance metrics across multiple methods in your Spring Boot application, you might want to consider Spring AOP. It’s a powerful tool that allows you to separate cross-cutt...Oct 30, 2025·3 min read
javatech.hashnode.dev🐢 Why Your JPA Transaction Slowed Down After Adding flush() and clear() (And How to Fix It)If you’ve ever added entityManager.flush() and entityManager.clear() inside a Spring Boot JPA transaction to “force visibility” after deletes and inserts — and then watched your app slow to a crawl — this post is for you. Let’s unpack what’s really h...Oct 29, 2025·4 min read
javatech.hashnode.devJava 25: Latest Features, Examples, and Real-World Use CasesJava 25 has officially arrived (September 2025 release), and it comes packed with exciting enhancements that continue to push the platform forward. If you’re a Java developer, architect, or just keeping your skills sharp, here’s a deep dive into what...Sep 26, 2025·3 min read
javatech.hashnode.dev🐳 Docker & Docker Compose for Beginners: Full Guide + Real Project ExampleWhether you’re a backend developer, DevOps enthusiast, or just getting into microservices, Docker is one of the most essential tools in the modern development toolbox. This guide will walk you through: What Docker & Docker Compose are Why Docker be...Jun 25, 2025·4 min read
javatech.hashnode.devOptimizing Nested Loops in Java: Real-World Performance Boosts🚨 Why Nested Loops Can Be Dangerous In Java (and most languages), nested loops seem innocent — until your application is dealing with large data sets and performance suddenly crashes. While they’re sometimes necessary, poorly optimized nested loops ...Jun 25, 2025·3 min read
