jupyter_server.prometheus package#


Log functions for prometheus


Tornado log handler for recording RED metrics.

We record the following metrics:

Rate - the number of requests, per second, your services are serving. Errors - the number of failed requests per second. Duration - The amount of time each request takes expressed as a time interval.

We use a fully qualified name of the handler as a label, rather than every url path to reduce cardinality.

This function should be either the value of or called from a function that is the ‘log_function’ tornado setting. This makes it get called at the end of every request, allowing us to record the metrics we need.

Prometheus metrics exported by Jupyter Server

Read https://prometheus.io/docs/practices/naming/ for naming conventions for metrics & labels.

Module contents#