Explore

System design LLD

⁠

Join Free Newsletter⁠

⁠

This repository contains resources to learn Low Level Design (LLD) / Object Oriented Design (OOD) and prepare for interviews.

👉 For a better and more comprehensive experience, checkout the

LLD page at AlgoMaster.io⁠

⁠

📌 Fundamental Concepts

⁠

Basics OOP Concepts⁠

⁠

SOLID Principles with Pictures⁠

⁠

SOLID Principles with Code⁠

⁠

DRY Principle⁠

⁠

YAGNI Principle⁠

⁠

KISS Principle⁠

⁠

Coursera - Object-Oriented Design⁠

⁠

⚙️ Design Patterns

Creational PatternsStructural PatternsBehavioral PatternsSingletonAdapterIteratorFactory MethodBridgeObserverAbstract FactoryCompositeStrategyBuilderDecoratorCommandPrototypeFacadeStateFlyweightTemplate MethodProxyVisitorMediatorMementoChain of Responsibility

🗂️ UML

⁠

Class Diagram⁠

⁠

Use Case Diagram⁠

⁠

Sequence Diagram⁠

⁠

Activity Diagram⁠

⁠

State Machine Diagram⁠

⁠

✅
`How to Answer a LLD Interview Problem`⁠
⁠

⁠

💻 Low Level Design Interview Problems

Easy Problems

⁠

Design Parking Lot⁠

⁠

Design Stack Overflow⁠

⁠

Design a Vending Machine⁠

⁠

Design Logging Framework⁠

⁠

Design Traffic Signal Control System⁠

⁠

Design Coffee Vending Machine⁠

⁠

Design a Task Management System⁠

⁠

Medium Problems

⁠

Design ATM⁠

⁠

Design LinkedIn⁠

⁠

Design LRU Cache⁠

⁠

Design Tic Tac Toe Game⁠

⁠

Design Pub Sub System⁠

⁠

Design an Elevator System⁠

⁠

Design Car Rental System⁠

⁠

Design an Online Auction System⁠

⁠

Design Hotel Management System⁠

⁠

Design a Digital Wallet Service⁠

⁠

Design Airline Management System⁠

⁠

Design a Library Management System⁠

⁠

Design a Social Network like Facebook⁠

⁠

Design Restaurant Management System⁠

⁠

Design a Concert Ticket Booking System⁠

⁠

Hard Problems

⁠

Design CricInfo⁠

⁠

Design Splitwise⁠

⁠

Design Chess Game⁠

⁠

Design a Snake and Ladder game⁠

⁠

Design Ride-Sharing Service like Uber⁠

⁠

Design Course Registration System⁠

⁠

Design Movie Ticket Booking System⁠

⁠

Design Online Shopping System like Amazon⁠

⁠

Design Online Stock Brokerage System⁠

⁠

Design Music Streaming Service like Spotify⁠

⁠

Design Online Food Delivery Service like Swiggy⁠

⁠

📚 Books

⁠

Head First Design Patterns⁠

⁠

Clean Code⁠

⁠

Refactoring: Improving the Design of Existing Code⁠

⁠

📩 Newsletter

⁠

AlgoMaster Newsletter⁠

⁠

Additional resources

⁠

Coursera - Design Patterns⁠

⁠

Github - Awesome Design Patterns⁠

⁠

🤝 Contributing

Want to print your doc?
This is not the way.

Try clicking the ··· in the right corner or using a keyboard shortcut (

CtrlP

) instead.