buyakaa.hashnode.devUnderstanding GoF (Gang of Four) Design PatternsIn software development, one of the biggest challenges is reusing code while keeping it flexible, maintainable, and easy to extend. This is where design patterns come in. The term GoF Design Patterns comes from the famous book “Design Patterns: Eleme...Aug 18, 2025·3 min read
buyakaa.hashnode.dev🧪 Introduction to Mockito: Unit Testing Made Easy in Java🤔 What is Mockito? Mockito is a powerful Java mocking framework used primarily for unit testing. It allows developers to simulate the behavior of real objects, making it easier to test code in isolation—without relying on actual dependencies like da...Jul 21, 2025·3 min read
buyakaa.hashnode.devSecuring SOAP API Calls with X.509 SignaturesWhen interacting with secure SOAP web services, simple username/password authentication is often not enough. A more robust approach is to use cryptographic signatures to prove the client's identity and ensure the integrity of the request data. This m...Jul 14, 2025·4 min read
