Weekly .NET Roundup: Dockerfile Debugging and In-Process Metrics
The Coding section offers guides for in-depth debugging and instrumentation, helping teams diagnose container builds and monitor .NET workloads with minimal overhead.
Debugging Dockerfiles in Visual Studio Code Using the Debug Adapter Protocol
A new tutorial shows how VS Code leverages the Debug Adapter Protocol (DAP) for interactive Dockerfile debugging. Features include setting breakpoints, stepping through build stages, and inspecting commands during image creation. Integration with VS Code extensions and Docker tooling improves the troubleshooting process. Supporting resources are available for hands-on exploration.
Recording Metrics In-Process with MeterListener Using System.Diagnostics.Metrics
Andrew Lock details the use of MeterListener in .NET for collecting in-process metrics. Examples include a simple ASP.NET Core app with interactive visualization using Spectre.Console and a custom MetricManager for filtering and tracking resource metrics like routing, memory, and CPU. Scheduling and aggregation are handled via BackgroundService and concurrency with Interlocked. The approach supports prototyping and forms a foundation for advanced app-level monitoring.