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    16 · Design problem · medium

    Design a distributed cache

    Sale opens at 00:00. What keeps 9 million reads a second off the database?

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    1. 60-second story 9 cards · 1 minOne idea per card. Tap through it like stories.(done)
    2. Quick check 3 questions · 1 minTap an answer, get instant feedback.(done)
    3. Go deeper 11 min4 estimates, 2 build-up diagrams and 6 “you’re the candidate” moments.(done)
    4. Full breakdown 34 min · 12 figuresThe complete breakdown, every number and figure.(done)

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