Observability of applications in production is important. It’s easy to stream logs to a syslog endpoint. Depending on the programming language obtaining app-related metrics can vary in difficulty. Beside this, it is complicated to determine your app container’s load. Since version 3 of the CF API, Cloud Foundry supports sidecars. In this talk, You will see how to add a small golang binary wrapped in a sidecar buildpack which streams the container metrics. Using this sidecar approach avoids the necessity for reimplementing the collection of the same metrics across all applications. Instead, the effort is reduced to a minimum when pushing the application to Cloud Foundry.