Master system design with comprehensive LLD questions and solutions
Total Questions
Easy Level
Medium Level
Hard Level
Learn to design a probabilistic data structure for efficient membership testing
Implement a Least Recently Used cache with O(1) operations
Build a scalable notification system for real-time alerts
Design a parking lot management system with multiple vehicle types
Create an autocomplete system with prefix matching and suggestions
Implement the classic board game with game logic and state management
Build a task management system with CRUD operations and status tracking
Create a tic-tac-toe game with win detection and player management
Design an ATM system with transaction processing and security
Build a real-time chat application with messaging and presence
Implement an elevator control system with scheduling algorithms
Create an inventory system with stock tracking and order management
Design a logging framework with different log levels and handlers
Build a payment gateway with transaction processing and validation
Implement a publish-subscribe messaging system
Create a rate limiting system to control API request rates
Build a search engine with indexing and ranking algorithms
Design an expense splitting application with debt calculation
Create a Q&A platform with voting, reputation, and moderation
Build a URL shortening service like bit.ly with analytics
Implement a vending machine with payment and inventory management
Design a comprehensive e-commerce platform with multiple services
Build an advanced vending machine with recipe management
Create a sports information system with live score updates
Implement a file system with directory structure and file operations
Design a professional networking platform with connections and feeds
Build a movie ticket booking system with seat selection
Create an auction platform with bidding and time management
Design a food delivery platform with order tracking and payment
Build a stock trading platform with order matching and execution
Create a restaurant management system with table and order management
Design a music streaming platform with playlists and recommendations
Implement a task scheduling system with priority and dependencies
Build a ride-sharing platform with matching and tracking
Create a version control system like Git with branching and merging