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Searchable Incident Archive Lets a Platform Engineer Track 938 Write-Ups

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A developer documenting every Kubernetes platform bug with symptom, root cause, fix, and proving test has built up roughly 1,750 documents, including 938 incident write-ups. To make them useful, they built a pgvector-backed search index on a multi-cluster setup, deployed via ArgoCD, with an indexer that embeds new and changed docs and prunes deleted ones. The index feeds a pre-filing duplicate check and a Slack question-answering command. A Grafana dashboard tracks index freshness, drift, backlog, run health, and reachability so the team can trust the index's answers. A recency-related answer failure was traced to pure similarity ranking, and the fix was to detect recency terms, widen the candidate pool, and sort newest first.

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