Notes / Projects / Platform Shipsolid / 03 Reliability Engineering

Error Budget Policy

How error budgets are calculated, consumed, and enforced.

Updated June 9, 2026 · §202606092046-21 ·
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Error Budget Policy

Purpose

How error budgets are calculated, consumed, and enforced.

Policy

  • Budget = 1 − SLO, measured over the SLO window.
  • When budget is healthy: ship freely.
  • When budget is exhausted: feature freeze; reliability work takes priority until recovered.

Burn-rate alerts

SeverityBurn rateMeaning
Pagefast (e.g., 14.4x / 1h)Budget gone in hours
Ticketslow (e.g., 1x / 6h)Sustained degradation

[stub: error-budget-thresholds] — fill this in. Greppable doc-debt marker.

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