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Dev Reflects on Building a Secure Inventory Router for a Restaurant Management App

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A software developer has shared a detailed retrospective on their contribution to Dine Flow, a restaurant inventory and order-management platform built by a six-person team over six weeks. Their core responsibility was the Express/TypeScript backend, with a particular focus on the stock router powered by Prisma and PostgreSQL. The router handled ingredient tracking, expiration dates, supplier integrations, and automatic stock decrements tied to order placements. During development, the engineer caught a subtle bug where a single-item endpoint was silently returning the entire stock table with a 200 status, reinforcing the lesson that a successful response and a correct response are not the same thing. A deliberate design choice was also made to treat each delivery as an immutable record rather than updating existing rows, preserving batch-level expiration tracking critical to food safety.

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