Designing location-based systems like Yelp or Facebook's "Nearby Friends".
Or, spend that 45 minutes reading the first three chapters of the real book (Kindle or Paperback) and actually learn how to design a . system design interview alex xu volume 2 pdf github upd
Once upon a time, in the high-stakes world of technical hiring, engineers lived in fear of the "System Design Interview"—a broad, ambiguous gauntlet where there were no right answers, only trade-offs. To conquer this, they turned to a legendary guide: by Alex Xu and Sahn Lam . The Quest for Knowledge To conquer this, they turned to a legendary
: For a user with 500 friends, one update triggers 500 notifications. To scale, only fan-out to friends who are also currently active and within a reasonable distance. System Design Interview by Alex Xu.pdf - GitHub System Design Interview by Alex Xu
Which of those would you like?