Software Design Patterns in Practice

📌 Overview

This repository documents my journey mastering the 23 Gang of Four (GoF) design patterns.

Each pattern includes:

• 📖 Concept explanation
• 🧠 Problem it solves
• 🏗️ Structure (UML)
• 💻 Implementation
• 🌍 Real-world use case
• ⚖️ Pros & Cons

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🧱 Design Patterns Categories

1️⃣ Creational Patterns

• Singleton
• Factory Method
• Abstract Factory
• Builder
• Prototype

2️⃣ Structural Patterns

• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy

3️⃣ Behavioral Patterns

• Chain of Responsibility
• Command
• Interpreter
• Iterator
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

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🎯 Goals

• Strengthen software architecture skills
• Write extensible and maintainable code
• Understand when NOT to use a pattern
• Connect theory to real-world backend/frontend systems

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🚀 Technologies Used

• language :TypeScript
• UML Diagrams
• Clean Architecture principles

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📚 Reference

Inspired by:

• 📖 Refactoring Guru – https://refactoring.guru/design-patterns

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🏗️ Author

Anouar Mellouk – Full Stack Engineer