What you'll learn

Most developers know how to use async and await, but few understand what really happens under the hood — or how to avoid the subtle mistakes that cause thread pool starvation, lost exceptions, and data inconsistencies in production.

In this course, Developing an Asynchronous ASP.NET Core 10 Web API, you'll gain the ability to write correct, scalable async code for ASP.NET Core 10 Web APIs.

First, you'll explore what the compiler generates when you mark a method with async, how the thread pool manages requests, and which return types to use.

Next, you'll discover how to propagate CancellationTokens from the HTTP request down to the database and external services, how to stream data with IAsyncEnumerable, and how to integrate resilient HTTP calls with cancellation-aware retry and timeout policies.

Finally, you'll learn how to identify and fix the most common async anti-patterns — sync-over-async, Task.Run on the server, shared state mutation, fire-and-forget calls, and async lambdas in LINQ.

When you're finished with this course, you'll have the skills and knowledge of advanced asynchronous development needed to build ASP.NET Core 10 Web APIs that handle concurrency, cancellation, and failures correctly in production.