[21:31:54] <ryankemper>	 semi-random question: this metric is named `job_backend:trafficserver_backend_requests:avail5m`, but as far as I can tell it's actually a % of failed requests, since it's dividing 5xx by total requests. Is that right, and if so does `avail5m` mean something different than what I'm assuming ("availability over 5 minute period')?
[21:31:58] <ryankemper>	 metric in question: https://github.com/wikimedia/operations-puppet/blob/production/modules/profile/files/prometheus/rules_ops.yml#L391-L393