/DesignPatterns

This repo features key design patterns with concise explanations and practical implementations to help you understand and apply software design principles.

Primary LanguageJavaMIT LicenseMIT

Design Patterns

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Creational

1- Simple Factory (Factory) 🏭

2- Factory Method (Virtual Constructor) ⚙️

3- Abstract Factory 🛒

4- Builder 🏗️

5- Prototype (Clone) 🧬

6- Singleton 🔒

Structural

1- Adapter (Wrapper) 🔌

2- Bridge 🌉

3- Composite (Object Tree) 🌳

4- Decorator (Wrapper) 🎁

5- Facade 🏛️

6- Flyweight (Cache) 🪶

7- Proxy 🕵️‍♂️

Behavioral

1- Chain of Responsibility (CoR / Chain of Command) 🔗

2- Command (Action / Transaction) 🎮

3- Interpreter 🧠

4- Iterator 🔄

5- Mediator (Intermediary / Controller) 🧩

6- Memento (Snapshot) 📸

7- Observer (Event-Subscriber / Listener) 👀

8- State 🔀

9- Strategy ♟️

10- Template Method 📋

11- Visitor 🚶

Microservices

1- API Gateway ❌

2- Database per Service ❌

3- Circuit Breaker ❌

4- Service Discovery ❌

5- Event Sourcing ❌

6- CQRS (Command Query Responsibility Segregation) ❌

7- Saga ✅

8- Strangler Fig ❌

9- Bulkhead ❌

10- Sidecar ❌

Anti-Patterns

1- Magic PushButton ❌

2- Boat Anchor ❌

3- Cargo Cult Programming ❌

4- Error Hiding ❌

5- Lava Flow ❌

6- Spaghetti Code ❌

7- God Object (The Blob) ❌

8- Copy-Paste Programming ❌

9- Golden Hammer ❌

10- Reinventing the Square Wheel ❌