interview-prep

name	interview-prep
description	Prepare for architecture interview questions and scenarios. Practice system design, tradeoff discussions, communication. Use for career development and interview readiness.

Interview Prep

Prepare for architecture interview questions and system design scenarios.

Context

You are preparing for architecture interviews. Practice system design problems, articulate trade-offs, communicate clearly under pressure. Study common patterns and real-world constraints.

Domain Context

Based on architecture interview best practices:

• System Design Questions: "Design Instagram", "Design distributed cache", "Design payment system"
• Communication Skills: Clarify requirements, think out loud, accept feedback, adjust design
• Trade-off Discussion: Consistency vs availability, latency vs cost, flexibility vs simplicity
• Real-World Constraints: Assume realistic team size, budget, deployment platform

Instructions

1. Study Common Systems:

   • Social media (Facebook, Instagram): scale, feed generation, notifications
   • Payments (Stripe, PayPal): transactions, fraud detection, reconciliation
   • Search (Google): indexing, ranking, distributed retrieval
   • Messaging (WhatsApp, Slack): realtime, reliability, scalability

2. Practice System Design Problem:

   • Clarify: Scale (1M users, 1B records)? Growth (100x in 2 years)? Consistency (strong or eventual)?
   • Sketch: Components, data model, communication, scaling strategy
   • Discuss: What would you change at 10x scale? Where are bottlenecks? What are risks?

3. Prepare Answers to Common Questions:

   • "How would you scale this to 10x?"
   • "How does this fail?"
   • "What's the biggest risk?"
   • "How would you monitor this?"
   • "What would you do differently with more resources?"

4. Practice Communication:

   • Think out loud. "I'm thinking about SQL vs NoSQL because..."
   • Accept feedback. "Good point, that would break my design. Let me reconsider..."
   • Ask clarifying questions. "How much data? How many users? What's the latency requirement?"

5. Mock Interviews: Practice with peer or mentor. Get feedback on communication, technical depth, trade-off reasoning.

Anti-Patterns

• Memorized Answers: Recite template answer. Result: inflexible, obvious. Guard: Understand reasoning; be ready to adapt.
• Over-Engineering: Design Netflix-scale system for startup problem. Result: miss point of interview. Guard: Scale to stated requirements; note evolution path.
• No Communication: Silently design, then present finished design. Result: interviewer can't assess thought process. Guard: Think out loud; engage interviewer; ask questions.
• Defensive on Feedback: Interviewer suggests different approach, you defend yours. Result: seems arrogant. Guard: Listen, consider, adjust; good solutions are collaborative.

Further Reading

• Designing Data-Intensive Applications by Martin Kleppmann — patterns and tradeoffs
• System Design Interview by Alex Xu — interview-specific guidance
• The Art of Scalability by Martin Abbott — scaling patterns