[he0001]

> My rough understanding is that this is similar to async/await in .NET?

The biggest difference is that C# async/await code is rewritten by the compiler to be able to be async. This means that you see artifacts in the stack that weren’t there when you wrote the code.

There are no rewrites with virtual threads and the code is presented on the stack just as you write it.

They solve the same problem but in very different ways.

[pansa2]

> They solve the same problem but in very different ways.

Yes. Async/await is stackless, which leads to the “coloured functions” problem (because it can only suspend function calls one-by-one). Threads are stackful (the whole stack can be suspended at once), which avoids the issue.

[jayd16]

There is overlap but they really don't solve the same problem. Cooperative threading has its own advantages and patterns that won't be served by virtual threads.

[he0001]

What patterns does async/await solve which virtual threads don’t?