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The Dashboard Was Green: How an AISRE Mindset Caught a RAG Staleness Incident Nobody Else Saw

6 min read

Latency was nominal. Error rates were flat. The infrastructure was healthy by every traditional measure. But grounded answer rate had been silently declining for eleven days — and the cause was a retrieval index that had stopped refreshing without tripping a single alert.

aisresreragretrieval-stalenessai-observabilitysli-slollm-reliabilityplatform-engineeringincident-response2026