If you’re using Prometheus and restarting servers regularly (a default behaviour for gunicorn for example) then you’ll lose a little data, up to your Prometheus

If you’re using Prometheus and restarting servers regularly (a default behaviour for gunicorn for example) then you’ll lose a little data, up to your Prometheus scrape period, ever restart. My team found this pretty annoying for monitoring a Django site so we’ve ended up moving to a statsd push-based metrics approach and are finding numbers generally easier to trust and reason about.