This is not the Async you are looking for
summary
Explains exactly what Async/Await does and does not do: it helps with IO-bound work like CopyFileAsync with streams but not unlimited CPU parallelism, returning Task matters, and missing the async modifier causes hidden exceptions. Shows a real production failure where firing 100 tasks saturates CPU and crashes a host, and demos a fix with TPL Dataflow ActionBlock with MaxDegreeOfParallelism=4 plus throttling and fanout. Covers cancellation semantics — cancellation token cancels and deletes temp files — and how exceptions surface via Task aggregates versus immediate throws.
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chapters (8)
- 0:00Start
- 2:44Getting rid of the hourglass
- 3:22Step 1 - analyse your problem
- 40:09Exceptions with async ... await
- 42:29TPL Dataflow - in process Actor pattern
- 45:21A solution - the Actor model
- 58:05Summary of block types
- 59:17General concurrency issues
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