ASYNC AWAIT CHEATSHEET
24 Essential Async/Await Best Practices for Basic to Advanced C# Developers
From ValueTask Efficiency to Parallel Loops & Beyond
Published in
5 min readApr 4, 2024
Async/await in C# is a framework used for writing asynchronous C# code that is both readable and maintainable. These tips will help you to integrate async/await programming more effectively in the # projects:
1. ValueTask for Lightweight Operations
Use ValueTask
instead of Task
for asynchronous methods that often complete synchronously, reducing the allocation overhead.
public async ValueTask<int> GetResultAsync()
{
if (cachedResult != null)
return cachedResult;
int result = await ComputeResultAsync();
cachedResult = result;
return result;
}
2. ConfigureAwait for Library Code
Use ConfigureAwait(false)
in library code to avoid deadlocks by not capturing the synchronization context.
public async Task SomeLibraryMethodAsync()
{
await SomeAsyncOperation().ConfigureAwait(false);
}
3. Avoiding async void
Prefer async Task over async void except for event handlers, as async void can…