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When RAG Fails: Debugging Playbook (ANSWERED)

Scenario BasedRAGMedium15 min read

Medium RAG interview question on when rag fails: debugging playbook — architecture, trade-offs, eval, and production patterns.

TL;DR — Quick Answer

Triage: retrieval miss, bad rerank, context truncation, or generation ignoring context. Log retrieved chunks, scores, filters, and final prompts; cluster bad answers; fix the earliest broken pipeline stage first.

The Interview Question

Explain when rag fails: debugging playbook. How would you design, implement, and evaluate this in a production RAG system? Discuss trade-offs and failure modes.

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