Why does this skill avoid 'async void'?

Async void is dangerous because the caller cannot await it and exceptions thrown within the method cannot be caught, which can lead to application crashes. It should only be used for event handlers.

Does this skill help with UI deadlocks?

Yes, it provides guidance on using ConfigureAwait(false) in library code to prevent synchronization context capture, which is a common cause of deadlocks in UI and legacy ASP.NET applications.

How are C# 8+ async streams handled?

The skill includes patterns for implementing and consuming IAsyncEnumerable, allowing for memory-efficient processing of data streams that are retrieved asynchronously.

When should I use Task versus ValueTask?

Use Task for most asynchronous operations. Use ValueTask as a performance optimization for high-frequency methods where the result is often already available synchronously, as it reduces memory allocations.

C# Async Patterns

Name: C# Async Patterns
Author: icartsh

byicartsh

API Development

Implements and optimizes asynchronous C# code using modern async/await patterns, Task management, and cancellation strategies.

About

This skill provides specialized guidance for writing high-performance, non-blocking C# code following modern .NET standards (C# 8-12). It helps developers navigate complex asynchronous scenarios, including Task and ValueTask optimization, the implementation of IAsyncEnumerable for data streaming, and robust error handling with CancellationToken. By following these patterns, developers can build more responsive UIs and scalable backend services while avoiding common pitfalls like async void, deadlocks, and unnecessary allocations.

Key Features

Task and ValueTask performance optimization for high-throughput apps
Comprehensive CancellationToken integration for graceful timeouts
Modern async/await method signature and implementation patterns
Context management via ConfigureAwait(false) for library development
0 GitHub stars
Async stream implementation using IAsyncEnumerable

Use Cases

Building scalable API endpoints with non-blocking I/O operations
Managing long-running background processes with complex cancellation logic
Implementing responsive desktop or mobile UIs by offloading background work

About

Key Features

Task and ValueTask performance optimization for high-throughput apps
Comprehensive CancellationToken integration for graceful timeouts
Modern async/await method signature and implementation patterns
Context management via ConfigureAwait(false) for library development
0 GitHub stars
Async stream implementation using IAsyncEnumerable

Use Cases

Building scalable API endpoints with non-blocking I/O operations
Managing long-running background processes with complex cancellation logic
Implementing responsive desktop or mobile UIs by offloading background work