Object Oriented Design and Design Patterns Practice

SOLID Principles

Principle	Status
Single Responsibility	✅
Open-Closed	✅
Liskov Substitution	✅
Interface Segregation	✅
Dependency Inversion	✅

Design Patterns

Creational

Pattern	Status
Factory	⏳
Singleton	⏳
Builder	⏳
Prototype	⏳

Structural

Pattern	Status
Adapter	⏳
Decorator	⏳
Facade	⏳

Behavioral

Pattern	Status
Observer	⏳
Strategy	⏳
State	⏳

Problems

Problem	Status
Elevator Management System (State Pattern)	⏳
Order & Inventory Management System (Multithreading)	⏳
Text Editor/Word Processor (Flyweight Pattern)	⏳
Chess Game	⏳
Parking Lot System (Strategy Pattern)	⏳
Food Ordering & Rating System (Observer Pattern)	⏳

Learning Resources

Online Courses

• NeetCode OOD Interview Course
• NeetCode Design Patterns Course
• Coursera Software Design & Architecture Specialization
• Udemy Design Patterns in Go

References & Guides

• CodeZym Roadmap
• Awesome Low Level Design
• Go Design Patterns
• System Design Primer

Legend

• ✅ Completed
• ⏳ In Progress
• ❌ Not Started