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How to Build a RAG System with pgvector and LangChain: The Production Architecture

How to Build a RAG System with pgvector and LangChain: The Production Architecture Most production AI failures are not model failures. They are retrieval failures. If you want to understand why your RAG system is hallucinating, stop looking at your prompt. A perfect prompt with the wrong data yields a confident hallucination. An average prompt with the correct data yields…