System Design Interview Questions - Master Scalability

Ace system design interview questions with AI-generated scenarios. Practice scalability, databases, caching, and distributed systems for senior software engineer interview questions and FAANG interview preparation.

What are System Design Interview Questions?

System design interview questions assess your ability to design large-scale distributed systems. These questions are common in senior software engineer interview questions, tech lead interviews, and FAANG interview preparation. You'll be asked to design systems like Twitter, Netflix, Uber, or design interview systems that scale to millions of users.

Common system design interview topics include:

  • Scalability – Horizontal vs vertical scaling, load balancing, sharding
  • Databases – SQL vs NoSQL, replication, partitioning, CAP theorem
  • Caching – CDN, Redis, Memcached, cache invalidation strategies
  • Distributed Systems – Microservices, message queues, consistency patterns
  • Performance – Latency optimization, throughput, bottleneck analysis

How to Prepare for System Design Interviews

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1. Choose System

Select from popular systems: URL shortener, social network, video streaming, etc.

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2. AI Generates

Get detailed design questions with requirements, constraints, and scale

3. Practice & Learn

Review solution approaches, trade-offs, and best practices

Perfect For

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Senior Engineers

Prepare for senior software engineer interview questions and tech lead roles at FAANG and top tech companies.

  • E5/L5+ level interviews
  • Staff engineer positions
  • Architecture discussions
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FAANG Candidates

Practice system design interview questions for Google, Amazon, Meta, Apple, and Netflix interviews.

  • FAANG-style design problems
  • Scale to millions of users
  • Production system scenarios
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Career Switchers

Learn system design fundamentals as you transition from mid-level to senior roles.

  • System design basics
  • Common design patterns
  • Trade-off analysis
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Startup Engineers

Master scalability and distributed systems for fast-growing startup technical interviews.

  • MVP to scale transitions
  • Cost-effective architectures
  • Growth engineering roles

Common System Design Interview Questions

🔗 Design a URL Shortener

Like bit.ly or TinyURL - handle billions of URLs

📱 Design Twitter/X

Timeline, tweets, followers - handle millions of concurrent users

🎬 Design Netflix

Video streaming, CDN, recommendations at global scale

🚗 Design Uber

Real-time matching, location tracking, surge pricing

💬 Design WhatsApp

Real-time messaging, read receipts, media sharing

📸 Design Instagram

Photo uploads, feed generation, stories, notifications

Master These System Design Concepts

Load Balancing

Distribute traffic across servers for high availability

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Database Sharding

Partition data across multiple databases for scale

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Caching Strategies

Redis, Memcached, CDN for performance optimization

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Message Queues

Kafka, RabbitMQ for asynchronous processing

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Replication

Master-slave, multi-master for data redundancy

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CAP Theorem

Consistency, Availability, Partition tolerance trade-offs

Ready to Ace Your System Design Interview?

Generate unlimited system design interview questions with AI. Practice for FAANG, startups, and senior roles.

Start Practicing Now →