Reactive APIs of Java 9

Session abstract

Reactive programming is no longer an esoteric idea. Many libraries and tools have started providing excellent support for this programming style–so much so that Java 9 has embraced this idea by including it in the specification. This presentation takes a dive into what reactive programming looks like from the Java specification point of view. You’ll witness the creation of a small working example that illustrates the API and learn how to make use of it.

Speaker(s)

Name	Title	Company
Venkat Subramaniam	President, Agile Developer	Inc.

Session Info

Session type	Track
Developer Session	Core Java Platform

My Notes

Really full room here 🖖 Venkat is ever popular.

What’s Reactive Programming

The system should be :

Elastic
Message Driven

Don’t expose your database, expose your data.

In life and programming there are two things we should never share: toothbrush and database

Responsive
Resilient

Dataflow

Java 8 Streams

Options

RxJava
Akka
Reactor
and more

Reactive Streams API

4 interfaces:

Publisher -> emit data
Subscriber -> listens to data

Subscription -> a session you have with a publisher
Processors -> intermediary stuff can be both Publisher and Subscriber (e.g. filter)

Java 9

Come to the party 7 years late. Oracle phenomenal job by creating a standard 😜

How do you use it in Java 9… use one of the existing libraries.
The standard is just a vote of approval.

Summary

Again a really good talk

👍