Blog · Category

RAG

3 posts in this category.

  1. MAY 2026

    RAG · · 8 min

    RAG without a second database

    When your vectors live on the same row as the document they describe, the entire CDC-and-backfill layer of a RAG pipeline disappears — and a class of stale-retrieval bugs goes with it.

  2. APR 2026

    RAG · · 6 min

    The drift window: why your RAG retrieves stale chunks

    A customer-visible failure mode unique to two-store RAG — source updates, queue lag, retrievals against the old embedding. Anatomy of one outage and how same-transaction writes eliminate the window.

  3. RAG · · 7 min

    Building an agent memory layer on RedDB

    A copy-pasteable schema for episodic, semantic, and procedural memory in a single database — with the queries that retrieve them and the bookkeeping that keeps them honest.