ASP.NET Core | Change Token
A change token in ASP.NET Core is a general-purpose, low-level building block used to track state changes. Let me break it down for you: IChangeToken Interface : The IChangeToken interface propagates notifications that a change has occurred. It resides in the Microsoft.Extensions.Primitives namespace and is implicitly provided to ASP.NET Core apps via the Microsoft.Extensions.Primitives NuGet package. Key properties: ActiveChangeCallbacks : Indicates whether the token proactively raises callbacks. If set to false , a callback is never called, and the app must poll HasChanged for changes. HasChanged : Receives a value that indicates if a change has occurred. Additionally, it includes the RegisterChangeCallback(Action<Object>, Object) method, which registers a callback invoked when the token changes 1 . ChangeToken Class : The ChangeToken class is static and used to propagate notifications that...