Posts in category 'design'

Java App Slow Under Load? A Step-by-Step Performance Playbook

Your Java application works fine in testing, then falls over in production: requests pile up, the database runs out of connections, the server stops responding. The fix is rarely “add...

Software Design Principles Explained with Java Examples: SOLID, DRY, KISS, YAGNI and More

Why are some codebases still easy to change after five years, while others need a rewrite after one? It’s rarely the framework or the language. It’s whether the people who...

UML Diagrams for Java Developers: From Requirements to Code

The Unified Modeling Language (UML) is a graphical notation for modeling software systems. UML diagrams are not just pretty pictures: they communicate design decisions to the developers who build the...

Open-Closed Principle in Java with a Spring Boot Example (SOLID Part II)

SOLID principles tell you how to arrange your functions into classes and how those classes should depend on each other. Applied well, they make your software easier to change, easier...

SOLID principles: The Definitive Guide (Part I)

SOLID principles tell you how to arrange your functions into classes and how those classes should be interrelated.