La démo RAG que tu prends pour un produit
Chunking documents, embedding them, storing them in a database, then pulling an excerpt before answering: that is the demo build. It works on the questions you had in mind while building it, and breaks on real ones. The production build adds four things: the query is rewritten before it reaches the index, two search engines run in parallel, a reranking step orders what comes back, and retrieval quality is measured before a single answer is trusted.