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LLD Introduction
Introduction to LLD
LLD vs HLD
🎯
OOP Fundamentals
Classes & Objects
Encapsulation
Inheritance
Polymorphism
Abstraction
Interfaces
🔗
Class Relationships
Association
Aggregation
Composition
Dependency
💡
Design Principles
DRY Principle
KISS Principle
YAGNI Principle
Clean Code Practices
⭐
SOLID Principles
Single Responsibility Principle
Open/Closed Principle
Liskov Substitution Principle
Interface Segregation Principle
Dependency Inversion Principle
📊
UML Diagrams
Class Diagrams
Sequence Diagrams
Use Case Diagrams
🎨
Additional Patterns
Factory Pattern
Singleton Pattern
Observer Pattern
Strategy Pattern
Decorator Pattern
Adapter Pattern
Builder Pattern
State Pattern
Command Pattern
Template Method Pattern
Proxy Pattern
💼
LLD Interview Tips
LLD Interview Approach
Common LLD Mistakes
Evaluation Criteria
❓
LLD Interview Questions
Design Parking Lot
Design Elevator System
Design Library System
Design ATM
Design Vending Machine
Design Chess Game
Design Hotel Booking
Design Snake & Ladder
Design Tic Tac Toe
Design Amazon
Design Movie Booking
Design Chat Application
Design Splitwise
Design Food Delivery
Design Cricinfo
Design Logger System
Design File System
Design Social Network
Design Stack Overflow
Design Online Auction
Back to LLD
4/20
LLD
|
❓ LLD Interview Questions
|
30 min
Design ATM
Personal Notes
Intermediate
30 min read
+10 XP
TL;DR — Design ATM
Learn Design ATM — a key concept for LLD interviews.
Interactive — Try it yourself!
Mark as Complete (+10 XP)
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Design Library System
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Design Vending Machine