System Design Interview: Design a Configuration Management System (etcd/Consul)
What Is a Configuration Management System? A configuration management system stores key-value configuration data that services read at startup or […]
System Design
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System Design
Learn to design scalable, reliable systems that handle millions of users. System design interviews test your ability to architect real-world applications, considering tradeoffs, scalability, and best practices.
Core Topics:
Scalability: Load balancing, horizontal vs vertical scaling
Storage: Databases (SQL vs NoSQL), caching (Redis, Memcached)
Reliability: Replication, failover, disaster recovery
Performance: CDNs, caching strategies, database indexing
Common Design Questions:
Design URL shortener (bit.ly)
Design rate limiter
Design Twitter/Instagram feed
Design messaging system (WhatsApp)
Design file storage (Dropbox)
Interview Level: Senior engineers (L5+) at FAANG companies. Requires 3-5+ years experience to tackle effectively.
Preparation: Study system design patterns, understand distributed systems fundamentals, and practice mock interviews.
System Design
System Design Interview: Design a Fraud Detection System
What Is a Fraud Detection System? A fraud detection system identifies and blocks fraudulent transactions, account takeovers, and abuse in
System Design
System Design Interview: Design a Search Engine (Query Processing and Ranking)
What Is a Search Engine? A search engine indexes a corpus of documents and retrieves the most relevant results for
System Design
System Design Interview: Design a Video Streaming Platform (YouTube/Netflix)
What Is a Video Streaming Platform? A video streaming platform stores, processes, and delivers video content to millions of concurrent
System Design
System Design Interview: Design a Digital Wallet and Payment System
What Is a Digital Wallet? A digital wallet stores funds and enables transfers between users and merchants. Examples: PayPal, Venmo,
System Design
System Design Interview: Design a Real-Time Analytics Dashboard
What Is a Real-Time Analytics Dashboard? A real-time analytics dashboard displays live metrics and aggregations over streaming data: active users,
System Design
System Design Interview: Design an E-Commerce Order and Checkout System
What Is an E-Commerce Order System? An e-commerce order system manages the full lifecycle of an online purchase: cart management,
System Design
System Design Interview: Design a Ride-Sharing App (Uber/Lyft Dispatch)
What Is a Ride-Sharing System? A ride-sharing platform matches riders requesting trips with nearby available drivers in real time, computes
System Design
System Design Interview: Design a Code Review and Pull Request Platform
What Is a Code Review Platform? A code review platform allows developers to propose code changes (pull requests), receive line-by-line
System Design
System Design Interview: Design a Social Media Feed System
What Is a Social Media Feed System? A social media feed aggregates and ranks posts from followed users and surfaces
System Design
System Design Interview: Design a Hotel Reservation System
What Is a Hotel Reservation System? A hotel reservation system manages room inventory, bookings, availability search, and payments for hotels.
System Design
System Design Interview: Design a Content Moderation System
What Is a Content Moderation System? A content moderation system detects and removes harmful content (hate speech, spam, CSAM, misinformation,
System Design
System Design Interview: Design a Fleet Management and Vehicle Tracking System
What Is a Fleet Management System? A fleet management system tracks the real-time location and status of thousands of vehicles
System Design
System Design Interview: Design a Subscription Billing System
What Is a Subscription Billing System? A subscription billing system automates recurring charges for SaaS products, streaming services, and membership
System Design
System Design Interview: Design a Real-Time Gaming Leaderboard
What Is a Gaming Leaderboard System? A gaming leaderboard ranks players by score, showing top players globally, regionally, or among