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4,310 interview questions, answered.

Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.

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230 questions

  1. 25Design a birthday app for Facebook.MediumSystem design· Meta
  2. 26Design an app to allow book subscriptions with hard copies.MediumProductSystem design· Opentext
  3. 27Design a bookshelf for elderly people.MediumProductSystem design· Google
  4. 28Design a cache controller.HardSystem design· Google
  5. 29Design a solution to move the data from Cassandra in System X to system Y.HardSystem design· Google
  6. 30Design ChatGPTHardSystem design· OpenAI
  7. 31Design a currency exchange system.HardSystem designTechnical· TikTok
  8. 32Design a custom policy extension for an LRU Cache.MediumSystem design· The Trade Desk
  9. 33Design a denoising system for sounds.HardSystem design· Google
  10. 34Design a distributed file system.HardSystem design· Databricks, Google
  11. 35Design a distributed logging system.HardSystem design· Amazon, Goldman Sachs
  12. 36Design a DNS cache.MediumSystem design· Meta
  13. 37Design the leaderboard for Dream11 fantasy gaming with 100,000 registered teams.HardSystem design· Amazon
  14. 38Design Dropbox.HardSystem design· Dropbox, Meta
  15. 39Design an emergency service system for Alexa for a break-in scenario.HardProductSystem design· Amazon
  16. 40Design an evaluation framework for ads ranking.MediumAI MLProduct· Meta
  17. 41Design an events feature for a kids' messenger app.HardProductSystem design· Meta
  18. 42Design Facebook email.MediumProductSystem design· Meta
  19. 43Design Facebook Messenger.HardSystem design· Meta, Microsoft
  20. 44Design Facebook Newsfeed.HardProductSystem design· Meta
  21. 45Design Facebook to be more secure, private, and intimate.HardProductSystem design· Meta
  22. 46Design a fake news detection system.HardAI MLProduct· Meta
  23. 47Design a file system.HardSystem design· Amazon, Microsoft
  24. 48Design a file upload feature for an AI chat application.MediumCodingSystem design· xAI