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Tom Dykstra 2023-06-23 16:30:15 -07:00
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aspnetcore/release-notes/aspnetcore-8.0.md
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@ -281,6 +281,21 @@ ASPNETCORE_URLS=http://*:80/;http://*:8080/;https://*:443/;https://*:8081/
For more information, see <xref:fundamentals/servers/kestrel/endpoints> and <xref:fundamentals/servers/httpsys>.
### IHttpSysRequestTimingFeature
[IHttpSysRequestTimingFeature](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/IHttpSysRequestTimingFeature.cs,3c5dc86dc837b1f4) provides detailed timing information for requests when using the [HTTP.sys server](xref:fundamentals/servers/httpsys) and [In-process hosting with IIS](xref:host-and-deploy/iis/in-process-hosting?view=aspnetcore-8.0&preserve-view=true#ihsrtf8):
* Timestamps are obtained using [QueryPerformanceCounter](/windows/win32/api/profileapi/nf-profileapi-queryperformancecounter).
* The timestamp frequency can be obtained via [QueryPerformanceFrequency](/windows/win32/api/profileapi/nf-profileapi-queryperformancefrequency).
* The index of the timing can be cast to [HttpSysRequestTimingType](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/HttpSysRequestTimingType.cs,e62e7bcd02f8589e) to know what the timing represents.
* The value may be 0 if the timing isn't available for the current request.
[IHttpSysRequestTimingFeature.TryGetTimestamp](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/IHttpSysRequestTimingFeature.cs,3c5dc86dc837b1f4) retrieves the timestamp for the provided timing type:
:::code language="csharp" source="~/fundamentals/request-features/samples/8.x/IHttpSysRequestTimingFeature/Program.cs" id="snippet_WithTryGetTimestamp":::
For more information, see [Get detailed timing information with IHttpSysRequestTimingFeature](xref:fundamentals/servers/httpsys?view=aspnetcore-8.0&preserve-view=true#ihsrtf8) and [Timing information and In-process hosting with IIS](xref:host-and-deploy/iis/in-process-hosting?view=aspnetcore-8.0&preserve-view=true#ihsrtf8).
## Authentication and authorization
ASP.NET Core 8 adds new features to authentication and authorization.
@ -427,21 +442,6 @@ In .NET 8 we've invested in a suite of new features to make routing easier to le
For more information, see [Route tooling in .NET 8](https://devblogs.microsoft.com/dotnet/aspnet-core-route-tooling-dotnet-8/).
### IHttpSysRequestTimingFeature
[IHttpSysRequestTimingFeature](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/IHttpSysRequestTimingFeature.cs,3c5dc86dc837b1f4) provides detailed timing information for requests when using the [HTTP.sys server](xref:fundamentals/servers/httpsys) and [In-process hosting with IIS](xref:host-and-deploy/iis/in-process-hosting?view=aspnetcore-8.0&preserve-view=true#ihsrtf8):
* Timestamps are obtained using [QueryPerformanceCounter](/windows/win32/api/profileapi/nf-profileapi-queryperformancecounter).
* The timestamp frequency can be obtained via [QueryPerformanceFrequency](/windows/win32/api/profileapi/nf-profileapi-queryperformancefrequency).
* The index of the timing can be cast to [HttpSysRequestTimingType](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/HttpSysRequestTimingType.cs,e62e7bcd02f8589e) to know what the timing represents.
* The value may be 0 if the timing isn't available for the current request.
[IHttpSysRequestTimingFeature.TryGetTimestamp](https://source.dot.net/#Microsoft.AspNetCore.Server.HttpSys/IHttpSysRequestTimingFeature.cs,3c5dc86dc837b1f4) retrieves the timestamp for the provided timing type:
:::code language="csharp" source="~/fundamentals/request-features/samples/8.x/IHttpSysRequestTimingFeature/Program.cs" id="snippet_WithTryGetTimestamp":::
For more information, see [Get detailed timing information with IHttpSysRequestTimingFeature](xref:fundamentals/servers/httpsys?view=aspnetcore-8.0&preserve-view=true#ihsrtf8) and [Timing information and In-process hosting with IIS](xref:host-and-deploy/iis/in-process-hosting?view=aspnetcore-8.0&preserve-view=true#ihsrtf8).
### ASP.NET Core metrics
Metrics are measurements reported over time and are most often used to monitor the health of an app and to generate alerts. For example, a counter that reports failed HTTP requests could be displayed in dashboards or generate alerts when failures pass a threshold.