Reactive Java

The reactive manifesto movement promotes architecture that lets developers build applications to satisfy today’s demands of scalable, resilient and readily responsive websites and services. The cornerstone of such systems is their event driven nature. Rx java provides an interface that abstracts event delivery. It is aimed at simplifying server-side concurrency. With a set of functional operators for filtering, grouping, transforming and combining event streams Rx Java gives you powerful tools to create event driven systems. I will show you how to use this library on client and server side, how it influences application design and why this approach is superior to using futures and callbacks. I will present lessons we learned when using Rx Java in our production services; we will take a closer look at its performance characteristics and limitations. I will also show how one can use this approach to get rid of listeners and observers when interacting with various event producers (such as UI).