Intro

Last updated: Tue Apr 29 2025

Design patterns are proven, reusable solutions to common software design problems. They help improve code readability, maintainability, and scalability by providing standard approaches to recurring challenges in software architecture. Key Concepts

• Creational Patterns (e.g., Singleton, Factory)
• Structural Patterns (e.g., Adapter, Composite)
• Behavioral Patterns (e.g., Observer, Strategy)
• UML Class Diagrams
• SOLID Principles

This note introduces the essence of design patterns to help you recognize and apply them effectively in software design.