Alert rules

• Checkout error rate

  error_rate > 0.50% · 5m
  Page — on-call
  Breaching

• Payments p99 latency

  latency_p99 > 600ms · 10m
  Page — on-call
  Armed

• Fulfilment queue depth

  queue_depth > 20k · 3m
  Page — on-call
  Breaching

• Weekly error budget

  budget_consumed > 60% · week
  Email — platform list
  Breaching

• Scheduler lag

  scheduler_lag > 90s · 5m
  Slack — #incidents
  Armed

• Certificate expiry

  cert_expiry < 14d · daily
  Email — platform list
  Armed

• Search p99 after deploy

  latency_p99 > 900ms · 5m
  Slack — #incidents
  Off

• Worker disk pressure

  disk_usage > 85% · 10m
  Email — platform list
  Armed

Mutes last for this visit — everything is persisted, so reloads keep them.