Asynchronous Processing and Multithreading Are Always Fun
summary
Covers practical async and multithreading patterns in .NET: when to use Task.Run for CPU-bound work vs normal async for IO-bound work, and why Task.FromResult/Task.CompletedTask are much cheaper than allocating new Tasks. Explains async void pitfalls (exceptions escaping; prefer Func<Task> over Action), shows batching IO with Task.WhenAll to outperform awaiting in a loop, and demonstrates async stack-trace tools, benchmarks, plus notes on ConfigureAwait, async locals, and GC/finalizer issues on older .NET.
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chapters (14)
- 0:00Async and threading intro
- 3:56Sync vs async
- 7:33CPU vs I/O ops
- 10:48How async/await works
- 15:48Async migration pitfalls
- 19:52Exceptions in async
- 24:08Fixing async bugs
- 27:57Thread and pool usage
- 31:27Async performance myths
- 35:23Async and transactions
- 37:10Async and IDisposable
- 40:23Optimizing async loops
- 42:52Execution after await
- 44:18Tips and tools
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