Low Level Design: The Blueprint of Scalable Systems
🚀 Design smarter: learn how great code is built from the ground up.
Dive deep into object-oriented principles, master SOLID design, and apply real-world patterns to craft systems that are clean, scalable, and easy to maintain.
Learning Path
1. Fundamentals
Start with LLD basics and UML diagrams.
2. SOLID Principles
Learn the five fundamental principles of object-oriented design:
- Single Responsibility Principle
- Open/Closed Principle
- Liskov Substitution Principle
- Interface Segregation Principle
- Dependency Inversion Principle
3. Design Patterns
23 Gang of Four patterns with examples:
- Creational (Singleton, Factory, Builder, etc.)
- Structural (Adapter, Decorator, Proxy, etc.)
- Behavioral (Observer, Strategy, Command, etc.)
4. Case Studies
Real-world system design problems:
- Parking Lot System
- Elevator System
- Chat Application
- Library Management
- E-commerce System
Code Examples
Complete implementations available in: