Tag
error-budget
- Jun 17, 2026 Error Budgets as a Release Gate: The Arithmetic Behind the Freeze Converting a service level objective into a measured allowance of failure, normalising it with burn rate, alerting on two windows at once, and the places where the arithmetic stops matching user experience. software engineering
- May 18, 2026 Error Budget Policy: Freezes, Exemptions, and Escalation Arithmetic How a budget becomes an enforceable rule, why a freeze that everyone can override is worse than none, and how exemption quotas are computed from the budget itself. observability
- Oct 9, 2025 Decision Rules for Aborting or Promoting a Rollout Why repeatedly checking a canary against a fixed significance threshold inflates false aborts, how sequential methods and error-budget burn rates avoid that, and what sample sizes the arithmetic demands. devops
- Jul 17, 2025 Error Budget Units: Why Burn Rate Beats Remaining Budget How a budget derived from a target becomes a rate, why the rate is comparable across services with different targets, and where the arithmetic breaks at low volume. observability
- Jun 3, 2025 The SLI Ratio: Numerator, Denominator, and Measurement Point Why an availability target fixes nothing until the fraction behind it is defined, and how moving the counting location changes the reported number. observability
- May 26, 2025 Health Signals for Gating a Progressive Rollout Why readiness probes cannot decide whether a new version is good, which signals can, and how probe timing and baseline choice set the number of bad requests before an abort. devops