Things learned about how RED compares to USE at a larger scale
USE
Utilization: & time that the resource was down
Saturation: amount of work the resource has to do, often queue length
Errors: count of error events
RED
Request Rate: number of requests per second
Request Errors: number of those requests that are failing
Request Duration: amount of time those requests take
Four Golden Signals
Latency: time take for a request (Duration)
Traffic: how much demand it places on your system (Rate)
Errors: rate or requests that are failing (Errors)
Saturation: how "full" your services are
USE : Primary key is host
RED: Primary key is service
4GS: Primary key is service (with one added column)