If you want to get better at sports, you have to train. The same applies to improving your observability skills. Application Observability Code Challenges are here to help.

With these challenges, you can work through a prepared challenge with a prepared setup. The code contains some issues that you need to identify. Observability tools such as Grafana are already in place (or you can use your own). By making changes to the code, you can view the results in raw metrics, logs, traces, and prepared dashboards.
These exercises help you practice using observability tools such as Grafana.

Some problems are not that obvious, even if you have a stacktrace. Adding more data to your traces, logs and metrics will give you more insights, but how to do that?

Alerts, help me!! Stay calm — I know what to do!
If you receive alerts about an incident and know how to use the observability tools to identify problems, you will feel comfortable using them. It is important to be prepared for the real situation in order to handle an incident adequately.

I will explain what these code challenges look like and what you can learn from them. I will not demonstrate one of the challenges — that's your job!