PublishSubject with backpressure in RxJava 2.x

问题

I am currently choosing between RxJava 1.x or 2.x for my current project.

I basically need a PublishSubject with a backpressure strategy onBackpressureLatest().

I want to choose RxJava 2.x, but i can't quite get my head around on how to apply a backpressure strategy to a PublishSubject, as it inherits from Observable and not from Flowable.

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Could you please tell me how to create a PublishSubject with a onBackpressureLatest() backpressure strategy in RxJava 2.x ?

回答1:

In 2.x the backpressure was moved to the base type Flowable and its hot partners PublishProcessor, ReplayProcessor etc.

PublishProcessor<Integer> pp = PublishProcessor.create();
Flowable<Integer> out = pp.onBackpressureLatest();

回答2:

I used at some point something like this:

Subject<Object> emitterSubject = PublishSubject.<Object>create().toSerialized();

emitterSubject.toFlowable(BackpressureStrategy.LATEST)

来源：https://stackoverflow.com/questions/42185853/publishsubject-with-backpressure-in-rxjava-2-x