Add request metrics to metrics-server
With !76553 (merged), we added the ability for the metrics server to sample and exports its own metrics. We started by using an existing sampler, which only exports Ruby VM and procfs metrics.
We should also look into exporting request related metrics from the Rack server it runs, so that we can see how busy the server is, and open the ability to alert on these, if needed.
Edited by Matthias Käppler