Making your app monitorable by systems such as Prometheus

Monitoring is a critical aspect of maintaining the health and performance of any application, no matter the language. Monitoring is especially important in a cloud-native environment where resources are dynamic and distributed. There are certain nuances as to the differences between monitoring and observability in software engineering.

The monitoring aspects abide more by collecting data through predefined metrics and thresholds to detect and alert upon issues to define the overall health of the system, whereas observability is much more investigative and goes into a more comprehensive understanding of system behavior and performance to enable effective debugging and troubleshooting in complex environments. To focus on enabling monitoring capabilities and insights into the health of our application, we will focus on monitoring instead of observability in this book chapter.

Prometheus is a powerful tool when it comes to...