dotnet-controller-async

Refactoring synchronous ASP.NET Core controllers to async involves converting action methods to asynchronous implementations, propagating CancellationTokens, and adapting dependencies to their async counterparts to improve API responsiveness and scalability.

The benefit of async controllers in ASP.NET Core is enhanced scalability and responsiveness, allowing the web API to handle more concurrent requests by freeing threads while awaiting operations rather than blocking them during synchronous execution.

Yes, you can use primary constructors when creating new ASP.NET Core async controllers. This approach scaffolds controllers with proper dependency injection and async endpoints, following best practices for C# 12 and modern web API development.

Yes, this async controller refactoring approach works with C# 12. It ensures converted asynchronous implementations follow modern C# 12 best practices, including the use of primary constructors for cleaner dependency injection in ASP.NET Core APIs.

To propagate CancellationToken in async ASP.NET Core controllers, ensure it is properly passed through the asynchronous action methods and down to the adapted async dependencies, allowing cooperative cancellation during long-running API operations.

Limitations of converting sync controllers to fully async implementations include the need to adapt all downstream dependencies to their async counterparts, which may require additional refactoring if existing libraries do not support asynchronous operations.