Summary
In this chapter, we discussed monitoring and observability in ASP.NET Core web API applications. We explored how to handle errors and exceptions and return proper error responses. We also discussed how to implement health checks to determine the status of the application. Then, we learned about the basic concepts of observability, including logs, metrics, and traces, and how to integrate with OpenTelemetry and define custom metrics. We also explored some open-source tools, such as Prometheus, Grafana, Jaeger, and Seq, to collect and visualize metrics, traces, and logs. Finally, we introduced Azure Application Insights, a managed service for monitoring applications in one place.
Monitoring and observability are complex topics that require a deeper understanding of distributed systems and microservice architecture. In this chapter, we only introduced the basic concepts. To gain a more comprehensive understanding of these topics, further study is necessary.
In the next chapter...
