Why Vector RAG Fails Blast-Radius Questions (and the 4-Hop Cypher Query That Fixes It)

Описание и применение

Vector RAG не справляется с многопереходными вопросами о зависимостях, но FalkorDB, используя Cypher, предоставляет детерминированные ответы с доказательством.

Задача

Vector RAG cannot resolve multi‑hop dependency questions because it relies on semantic similarity rather than graph topology, leading to missed cascading failures during outages.

Результат

The FalkorDB graph agent provided deterministic, provenance‑backed answers to blast‑radius questions, enabling rapid incident triage.

Рабочий процесс

• 1. Identify failing system (ledger‑service).
• 2. Run 4‑hop Cypher query to find downstream consumers.
• 3. Run expertise query to rank engineers by active project involvement.
• 4. Run decision provenance query to retrieve related ADRs and context.
• 5. Use results to inform incident response.

Доказательства

Vector RAG operates by chunking text, generating high‑dimensional embeddings, and performing cosine similarity search.

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What it cannot do is compute transitive closure across an architecture diagram.

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The graph is load‑bearing. The LLM is only a router and explainer. Every answer must be a deterministic Cypher traversal with verifiable provenance.

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When ledger‑service fails, what breaks downstream? We execute a variable‑length incoming traversal (-[:DEPENDS_ON*1..5]-).

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