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Building RAG from Scratch: No Frameworks Needed

This story is from 2026-10-12. It is preserved in the archive; the latest stories are on the live feed.

Building RAG from Scratch: No Frameworks Needed Understand Retrieval-Augmented Generation by building it yourself — pure Python, zero dependencies. Introduction LangChain, LlamaIndex, Haystack — great tools, but they hide how RAG actually works. This tutorial builds a production-ready RAG system fr…

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  1. 2026-10-12 16:28 · DEV Community — AI
    Building RAG from Scratch: No Frameworks Needed

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