[skybrian]

How would a hobbyist programmer get started with tracing for a simple web app? Where do the traces end up and how do I query it? Can tracing be used in a development environment?

Context: the last thing I wrote used Deno and Deno Deploy.

[curioussavage]

Just install opentelemetry libs. I found this example with a quick search: https://dev.to/grunet/leveraging-opentelemetry-in-deno-45bj

opentelemetry has a service you can run that will collect the telemetry data and you can export it to something like prometheus which can store it and let you query it. Example here https://github.com/open-telemetry/opentelemetry-collector-co...

Typically in dev environments trace spans are just emitted to stdout just like logs. I sometimes turn that off too though because it gets noisy.

[eep_social]

For local dev Jaegar provides a very nice UI to do trace inspection, searching etc.