Welcome to the Low-Level Design (LLD) repository! 🎯
This repository is a hands-on collection of Java-based implementations where I’ve broken down core LLD concepts and design patterns, supported with real-world examples and visual diagrams for better understanding.
The goal of this repository is to help developers (including my future self) understand and apply key Low-Level Design principles effectively in software development. Each package focuses on a specific concept or design pattern, explained through practical code examples and structured flow diagrams.
If you're looking to level up your system design skills by diving deep into how objects and components interact in scalable software — this repo is for you.
This repo touches on a variety of LLD topics, including but not limited to:
- ✅ SOLID Principles: Improve software maintainability and extensibility.
- ✅ Design Patterns: Solve recurring software design problems in a proven way.
Each principle is demonstrated with examples to show how it helps in writing clean and modular code:
- Single Responsibility Principle (SRP)
- Open/Closed Principle (OCP)
- Liskov Substitution Principle (LSP)
- Interface Segregation Principle (ISP)
- Dependency Inversion Principle (DIP)
- Example: Creating families of related objects (e.g., different car models) without specifying their concrete classes.
- Example: Adding toppings to a base pizza dynamically — promoting code flexibility and reuse.
- Example: Car factory that returns either a Luxury or Average car, abstracting object creation logic from the client.
- Example: Weather update notification system where multiple observers subscribe and get updates — demonstrating loose coupling.
- Example: A Tic-Tac-Toe game that uses interchangeable algorithms for deciding moves.
- Clone the repository:
git clone https://github.com/your-username/low-level-design-java.git