Notes / Projects / Platform Shipsolid / 07 Cost Governance

Cardinality Governance

How the platform governs cardinality — the primary cost and stability risk.

Updated June 9, 2026 · §202606092046-52 ·

Cardinality Governance

Purpose

How the platform governs cardinality — the primary cost and stability risk.

Rules

  • Any new metric/label/trace attribute ships with a cardinality estimate in the PR.
  • Default to drop/hash before keep when source cardinality is unbounded.
  • High-churn values (IDs, raw timestamps) are an automatic stop → logs/traces/exemplars.

Gate

Reach for the Cardinality Budget Calculator skill before adding labels to any production-bound Alloy/Prometheus/OTel config.

Top contributors (rolling)

[stub: cardinality-top-contributors] — fill this in. Greppable doc-debt marker.

Local graph

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