System Design Interview (2025): The Complete, Up‑to‑Date Guide to Master Real‑World Systems and Ace Every Technical Interview
You’ve read all the blog posts. You’ve memorized a dozen architectures. Yet when the interviewer says, “Design YouTube,” your brain starts racing: Where do I begin? How deep should I go? What if I miss a critical bottleneck? If that’s you, you’re not alone—and you’re not underqualified. You’re just missing a repeatable way to learn,…