Never start drawing right away. Ask clarifying questions to establish the boundaries of the system.
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System design interviews are open-ended, which makes them incredibly stressful. Candidates are asked to design massive, scalable systems—like YouTube, WhatsApp, or Web Crawlers—in just 45 minutes. Alex Xu mastered the art of breaking down these complex, abstract architectures into digestible, repeatable frameworks. The Famous 4-Step Framework Never start drawing right away