This story was originally published on HackerNoon at:
https://hackernoon.com/six-lessons-from-building-an-ai-powered-marketplace-search-engine.
A builder’s postmortem on multilingual AI marketplace search, from fake category IDs and broken price filters to caching, regex bugs, and latency.
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The hardest parts of building multilingual AI search were not the LLM itself, but the system boundaries around it: API units, unvalidated IDs, bad regex assumptions, cache ordering, latency, and messy marketplace data.