[tracker1]

For that matter, even if you do use async, if you're writing a service based app (such as web services), IMO, you'd probably just want to center on tokio and axum, then stick to the tokio ecosystem. The main reason it's not a blessed standard library thing, is that Rust can scale down into embedded systems usage, and you aren't going to use something like Tokio there... that doesn't mean you shouldn't just use what everyone else does at a higher level application.

Also, in regards to OP's reference to changes to Rust, it's not changes/additions or bug fixes that should be a concern, it's the number of breaking changes. For a contemporary counter example, look at how much C# has changed since the .Net Core fork started out... They're on version 11 now (skipped v4), and that doesn't count the library sub-version shifts along the way. And a lot of critical banking infrastructure is written in and running on it (as well as Java). Your money is literally relying on it.

[SkiFire13]

> And a lot of critical banking infrastructure is written in and running on it

How much of that critical infrastructure runs on .NET Framework as opposed to the latest .NET Core though?

[moomin]

IME: less than you’d think. I know one major C# project that’s only half completed its migration and that huge (both in terms of what’s been achieved and what still needs doing). There’s another that keeps it for the front end because it runs on >10,000 client machines. All the others, big or small, have migrated with small carve-outs for stuff .NET Core doesn’t and probably never will support.

[tracker1]

From recent experience I'd put it slightly higher on the old framework, but plenty of new dev on v5+ and I think sticking on framework is worse at this point.

Though I would say that breaking changes since Core 3 have been pretty limited. V5 unified .net under the new core as the path forward for framework users as well.