REACT I V E S TR EAMS COND ENS ED

W H A T D O Y O U N E E D T O K N O W A B O U T N E W S T A N D A R D F R O M J V M W O R L D

The Java World was Sad Once…

... Here comes Java 8…

…And new King

Not Enough

STREAMS ARENot LAZY

stream.forEach(x -> {return x * 2;

})

DON’T HAVE API TO REALTIME, DISTRIBUTED PROCESSING

Only Push orPull

stream.forEach(x -> {return x * 2;

})

Iterator i = stream.iterator()while (i.hasNext()){// do execution

}

NOT A SPECIFICATIONNot A Specification

JVM is not just Java

Reactive Streams

Stream Over AsyncBoundaries

FAST PublisherSlow SubscriberProblem

Publisher Subscriber

Demand

Data

RxJavaReactor from SpringSourceAkka StreamsVert.x

INTEROPERATIBILITY

void onSubscribe(Subscription s)

void onNext(T t)

void onComplete()

void onError(Throwable t)

SUBSCRIBER

void subscribe(Subscriber<? super T> s)

PUBLISHER

SUBSCRIPTION

void cancel()

void request(long n)

extendsSubscriber<T>, Publisher<R>

PROCESSOR

Publisher Subscribersubscribe

onSubscribe

request

Subscription

onNext

• All call on subscriber must be async• All call on Subscription must not block• Publisher just create subscription

CONTRACT

• 1.0.0 RC-5 published 10th April• Technology Compatibility Kit Released • JVM Interface• JS Interface• Network Protocols

CURRENT STATE

Thank You!