DevOps/CloudBackend
Golden Signals
Also written as Four Golden Signals, RED Metrics, USE Method
The short list of measurements worth watching on any service: traffic, error rate, response time, and how loaded the system is.
Think of it like
The four dials you actually check while driving, out of the hundreds the car could show you.
Junior or senior?
Marks someone who has designed monitoring rather than inherited it.
Senior sounds like
Can say what they deliberately chose not to alert on.
Ask them
“What did you page someone for at 3am, and what did you leave until morning?”