DPDigit Patroxindigitpatrox.hashnode.dev·May 12 · 6 min readHow to Build a RAG System with pgvector and LangChain: The Production ArchitectureMost production AI failures are not model failures. They are retrieval failures. If you want to understand why your Retrieval-Augmented Generation (RAG) system is hallucinating, stop looking at your p01D