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Databases & data modellingMediumSDE-2
Your app collects GPS pings from 200,000 delivery riders every 5 seconds. Product wants live tracking plus 90 days of history for disputes. How do you store this?
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DelhiverySwiggyUberZomato
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Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.
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