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A comment on .NET 5.0. Parent comment

Re:.NET 5.0 by CodesInChaos on Tuesday November 10, 2020 @12:46PM (#25048713)
Unless you have a lot of concurrent connections (C10k problem), having one thread per active request isn't a big deal. For my web applications, requests spend most of their time waiting on the database, and an open transaction is at least as expensive as a thread in an app server for many databases. So I agree that for most applications async isn't worth the complexity they introduce. In many implementations they also mess up your stacktraces, which makes debugging production issues harder.
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Re:.NET 5.0 by manigandham on Tuesday November 10, 2020 @02:37PM (#25050643)
.NET has millions of developers. They optimize for the greatest impact and async is necessary for performance. In fact high-performance is an explicit goal of the framework and it ranks at the top of the TechEmpower benchmarks.

Even if you don't need the performance, async code helps keep your app responsive and use less resources on your server. It's far better to have async and not need it then try to refactor your entire ap when it's necessary.

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Re:.NET 5.0 by nullsense on Tuesday November 10, 2020 @02:41PM (#25050701)
The web server uses a threadpool anyway. You're not creating threads that don't already exist. You're simply able to use the threads you do have for other tasks while waiting for I/O.
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