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ASP.NET Core built-in diagnostics metrics

This article describes the built-in diagnostics metrics for ASP.NET Core produced using the System.Diagnostics.Metrics API. These metrics report diagnostics information from the ASP.NET Core error handling middleware.

For an overview of all built-in metrics reference pages and how to read this reference, see ASP.NET Core built-in metrics. For information on how to collect, report, enrich, and test with ASP.NET Core metrics, see ASP.NET Core metrics.

Microsoft.AspNetCore.Diagnostics

The Microsoft.AspNetCore.Diagnostics metrics report diagnostics information from ASP.NET Core error handling middleware:

Metric: aspnetcore.diagnostics.exceptions

Name Instrument Type Unit (UCUM) Description
aspnetcore.diagnostics.exceptions Counter {exception} Number of exceptions caught by exception handling middleware.
Attribute Type Description Examples Presence
aspnetcore.diagnostics.exception.result string ASP.NET Core exception middleware handling result. handled; unhandled Always
aspnetcore.diagnostics.handler.type string Full type name of the IExceptionHandler implementation that handled the exception. Contoso.MyHandler If the exception was handled by this handler.
exception.type string The full name of exception type. System.OperationCanceledException; Contoso.MyException Always

See also

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