I'm not sure what tokio (or axum) can do to avoid the trait bounds. Would it makes sense to provide a "share nothing" runtime implementation that can be injected at startup? I wonder how the intermediate layers (e.g. axum) would indicate that futures are usable by a more generic runtime which may or may not need Send + 'static.

Without some way to write generic code for either runtime, the whole tokio ecosystem would end up bifurcated by this choice of runtime.

[–] [email protected] 1 points 1 month ago (1 children)

Would it makes sense to provide a "share nothing" runtime implementation that can be injected at startup?

Isn't this tokio::task::spawn_local?

[–] tatterdemalion 1 points 1 month ago

Not exactly. I'm talking specifically about being able to call axum::serve with non-Send futures.