Retrieval that stays honest
RAG Systems
Freshness, chunking, reranking, retrieval quality. The failure modes nobody demos and every production system has.
RAG SystemsYour RAG Did Not Notice the Document ChangedYour documents changed last week. Your index did not. A 260-line demo that catches a stale index lying, then fixes it with version stamps, hash-based refresh, deletion propagation, and 20 canary questions.2026-10-23 · 9 min readRAG SystemsReranking: The Second Pass That Finds RelevanceYour retriever pulled 50 chunks and the right answer ranked 37th. Retrieval finds candidates; reranking finds relevance. Two-stage retrieval, explained with the scores on the table.2026-10-23 · 6 min read