Mixing Asynchronous and Synchronous Code in .NET

In modern web development, mixing synchronous and asynchronous code is one of the most common causes of silent performance degradation, deadlocks, and thread pool starvation. This course provides a clear, text-based guide to understanding how the execution context, thread pool, and task schedulers interact under the hood. You will learn to identify where these two paradigms clash and how to safely bridge them in real-world applications. By understanding the core mechanics of thread allocation, you will be able to write highly responsive Web APIs that handle heavy concurrent traffic without bottlenecking. What you'll learn: - Understand the foundational differences between synchronous blocking and asynchronous non-blocking operations in .NET - Identify common anti-patterns like sync-over-async and async-over-sync that lead to thread pool starvation - Configure synchronization contexts and task schedulers to prevent application deadlocks - Apply modern best practices using async/await, Task, and ValueTasks for resource-efficient code - Analyze thread usage and diagnose performance bottlenecks in web application endpoints - Implement safe bridging strategies when integrating legacy synchronous libraries into modern asynchronous pipelines This course begins with essential terminology, outlining how operating system threads and the .NET thread pool manage workloads. You will then progress through practical code scenarios, learning how to refactor blocking calls into efficient asynchronous patterns. This text-only course is designed for backend developers and software engineers who have a basic familiarity with C# and Web APIs but want to build a rock-solid understanding of asynchronous performance. No advanced concurrency experience is required to start. Step up your backend engineering skills today.