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Domain · Technical Depth

What are the hard technical constraints of a modern retail POS and inventory platform — think offline resilience, real-time stock, and peak — and how would you design around them?

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The non-negotiable constraint is that a register must complete a sale even when the network is down — a store that can't check out is losing money by the minute, so the POS runs of…

The full answer: structure, worked example, likely follow-up.

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