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RAG Architecture in 2026: A Production Blueprint for Retrieval-Augmented Generation

This story is from 2026-09-21. It is preserved in the archive; the latest stories are on the live feed.

The notebook worked. Retrieval found the right passages, the model wrote a good answer, and the demo landed. Then the same design met real users and four things happened: first tokens took ten seconds or more, a document the user was never allowed to see turned up in the prompt, a wrong answer coul…

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  1. 2026-09-21 11:07 · DEV Community — AI
    RAG Architecture in 2026: A Production Blueprint for Retrieval-Augmented Generation

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