Design Pattern
🎯 What Are Design Patterns? Design patterns are proven solutions to common software design problems . They represent best practices refined over time by experienced developers. They help you: Write reusable and maintainable code. Improve communication between team members using a common vocabulary (e.g., "This uses the Singleton pattern "). Solve structural or behavioral challenges in object-oriented design. 🧩 Categories of Design Patterns Creational – deal with object creation (e.g., Singleton , Factory ). Structural – deal with class/object composition (e.g., Adapter , Decorator ). Behavioral – deal with object communication (e.g., Observer , Strategy ). 🟨 1. Singleton Design Pattern (Creational) ✅ Purpose: Ensure only one instance of a class exists in the application and provide a global point of access to it. 🔧 When to Use: Configuration manager Database connection pool L...