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yuvipanda a764f90b14 Add a /metrics endpoint for Prometheus Metrics ... [Prometheus](https://prometheus.io/) provides a standard metrics format that can be collected and used in many contexts. - From the browser to drive 'current resource usage' displays, such as https://github.com/yuvipanda/nbresuse - From a prometheus server to collect historical data for operational analysis and performance monitoring Example: https://grafana.mybinder.org/dashboard/db/1-overview?refresh=1m&orgId=1 for mybinder.org metrics from JupyterHub and BinderHub, via prometheus server at https://prometheus.mybinder.org The JupyterHub and BinderHub projects already expose Prometheus metrics natively. Adding this to the Jupyter notebook server allows us to instrument the code easily and in a standard format that has lots of 3rd party tooling for it. This commit does the following: - Introduce the `prometheus_client` library as a dependency. This library has no dependencies of its own and is pure python. - Add an authenticated `/metrics` endpoint to the server, which returns metrics in Prometheus Text Format - Expose the default process metrics from `prometheus_client`, which include memory usage and CPU usage info (for just the notebook process)		8 years ago
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__init__.py	s/jupyter_notebook/notebook	11 years ago
handlers.py	Add a /metrics endpoint for Prometheus Metrics	8 years ago
zmqhandlers.py	tornado 5: PeriodicCallback loop arg will be removed (#3034)	8 years ago