Cianplan

Level 4: Reliability, security & cloud · L4.2 Observability

Golden signals, RED and USE

Choose dashboards for services and resources.

11 min · Pro

What you take away

  • RED (rate, errors, duration) describes a request-serving service; USE (utilisation, saturation, errors) describes a resource.

And 3 more inside the class, in Pro.

How the class is laid out

  1. The problem
  2. Three checklists, and when each applies
  3. Utilisation is not saturation
  4. Two ways a dashboard lies
  5. Check your understanding