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Design a system that stores tax records (tax amount, employee ID, timestamp) and retrieves the total tax amount for a given employee over the past 30 days. As a follow-up, extend the solution to support querying tax totals over any arbitrary time range, where records may not be stored in chronological order.
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Design a Tax Record Store with Time-Windowed Query Support
Reported Sep 1, 2026 · 1 source report
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Source snapshot: Nov 12, 2026
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