Prometheus exporter for Tornado applications. Inspired by Flask Prometheus Exporter.
This is early alpha. At least, tests, proper docs are missing. Thus, it's not published to Pypi yet.
Instead of using tornado.web.Application as base class, use tornado_prometheus_exporter.Application.
tornado_http_request_duration_seconds_{count,sum,bucket} with as many bucket series as there are buckets.
Additionally, prometheus-client exports system metrics by default.