Categories: Infrastructure, Programming

I recently needed to track down some performance problems in a large (Java-based) application. My employer already uses Prometheus for monitoring, so it seemed time for me to get to grips with its concepts and instrument the application with appropriate metrics then create some matching Grafana dashboards.

Learning Prometheus/Grafana turned out to be a little harder than I thought so I have written up what I learned in case it is helpful to someone else.

And yes, it did help to track down the problem(s).