Why is there no `io.reactivex.Observable.asFlow`?

# coroutines

[Paul Woitaschek]

Why is there no io.reactivex.Observable.asFlow?

[Vsevolod Tolstopyatov [JB]]

Observable doesn’t support backpressure.

Thus in order to support asFlow, coroutine-specific BackpressureStrategy should be introduced (similar to https://projectreactor.io/docs/adapter/release/api/reactor/adapter/rxjava/RxJava2Adapter.html#observableToFlux-io.reactivex.Observable-io.reactivex.BackpressureStrategy-), properly explained and documented. I am not sure it worths it

[Paul Woitaschek]

And flowable supports backpressure?

[Vsevolod Tolstopyatov [JB]]

yes

[Paul Woitaschek]

Sorry I meant flow. Does flow support back pressure?

[Zach Klippenstein (he/him) [MOD]]

It does, through suspension. If a downstream call to emit suspends, all the emit calls upstream will also suspend, so nothing else can be emitted.