.NET Core 2.2 release, diagnostic improvements to the runtime, support for ARM32 for Windows

.NET Core
.NET Core 2.2 includes some of the improvements that make .NET Core easier to use and enhance its platform capabilities. Highlights are as follows:
.NET Core

Tiered Compilation

Tiered compilation is a feature that enables the runtime to more adaptively use the Just-In-Time (JIT) compiler to get better performance, both at startup and to maximize throughput. It was added as an opt-in feature in .NET Core 2.1 and then was enabled by default in .NET Core 2.2 Preview 2.

Runtime Events

oreCLR events can now be consumed using the EventListener class. These events describe the behavior of GC, JIT, ThreadPool, and interop. They are the same events that are exposed as part of the CoreCLR ETW provider on Windows. This allows for applications to consume these events or use a transport mechanism to send them to a telemetry aggregation service.

Support for AccessToken in SqlConnection

The ADO.NET provider for SQL Server, SqlClient, now supports setting the AccessToken property to authenticate SQL Server connections using Azure Active Directory. In order to use the feature, you can obtain the access token value using Active Directory Authentication Library for .NET, contained in the Microsoft.IdentityModel.Clients.ActiveDirectory NuGet package.

Injecting code prior to Main

.NET Core now enables injecting code prior to running an application main method via a Startup Hook. Startup hooks make it possible for a host to customize the behavior of applications after they have been deployed, without needing to recompile or change the application.

Windows ARM32

adding support for Windows ARM32, similar to the Linux ARM32 support we added in .NET Core 2.1. Windows has had support for ARM32 with Windows IoT Core for some time. As part of the Windows Server 2019 release, ARM32 support was also added for Nanoserver. .NET Core can be used on both Nanoserver and IoT Core.

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