health

config-infra · 3 of 3 promises kept

Promises kept3 / 3none broken

TierStandard P2config-infra

Kill switchnoneCore features roll back instead

Originbase featureGET /health

Promises

grouped by type

	Promise and latest result	Severity	Checked in
speed · 1
	health-fast 95% of health checks finish in under 200 ms Kept on its merge request (checked before every merge)	major	merge requesttest driveproduction
cost · 1
	health-no-store The health check never touches the database Kept on its merge request (checked before every merge)	minor	merge request
operability · 1
	health-reports-revision The health check reports which revision answered Kept in production (live check, 27 Oct 12:55 UTC)	major	merge requesttest driveproduction

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promises/features/base-health.yaml

feature: health
issue: null
kind: config-infra
tier: standard
priority: P2
owns:
  routes:
  - GET /health
  files:
  - app/features/health.py
flag: null
promises:
  speed:
  - id: health-fast
    says: 95% of health checks finish in under 200 ms
    measure: p95(latency, route='GET /health') < 200ms
    where:
    - mr
    - drive
    - live
    severity: major
  cost:
  - id: health-no-store
    says: The health check never touches the database
    static:
      file_lacks:
      - app/features/health.py
      - store
    where:
    - mr
    severity: minor
  operability:
  - id: health-reports-revision
    says: The health check reports which revision answered
    steps:
    - GET /health -> 200 contains revision
    where:
    - mr
    - drive
    - live
    severity: major