Hands-On RESTful Web Services with ASP.NET Core 3

Enable cancellation

Another important topic is to enable the cancellation of asynchronous operations. If we take a look at the service layer that we implemented in Chapter 8, and Chapter 9, we can see that in some cases we have the possibility of passing CancellationToken as a parameter. The CancellationToken provides a light way to notify all asynchronous operations that the consumer wants to cancel the current transaction. Moreover, our code can examine the CancellationToken.IsCancellationRequested property to detect whether the consumer has requested the cancellation of the task. This kind of approach is especial suitable for long-running operations because the consumer of our asynchronous code can request the cancellation of the current ...