Design Studio — Design an E-Commerce Platform (Amazon/Flipkart)
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Requirements
Scale & non-functional
- 300M products in the catalog
- 100K orders/day at steady state; 500K orders/day peak (sale events)
- 99.99% availability for the checkout and payment flows
- Search results returned in < 100ms
- Inventory must never go negative — zero overselling tolerance
- Order placement latency < 500ms (excluding payment processing)
- Payment processing: eventual confirmation within 30 seconds
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