I have always been a fan of tracing. My first taste of it was with NewRelic, but the development of OpenTracing and more recently OpenTelemetry have made it an easy must have in every project I start. I have created a new walk-through: Tracing and Observability with OpenFaaS to show you how to add OpenTelemetry to your Python Flask functions.
This post won’t go through the walk-through, the walk-through already does that.