Be Reactive and Micro with a MicroProfile Stack

MicroProfile, RxJava, React.js - what else do you need to build lightweight but robust reactive systems efficiently with opensource tools? Maybe something for effective data processing and distributed persistence? You can have it too with Kafka and Hazelcast. Now let’s have a look at how to assemble all together in almost no time, using Payara Micro. You’ll learn how to use a couple of simple tools to build a highly efficient, scalable and robust system that can be evolved continuously to meet rapidly changing needs and increasing loads.

Presented at JPrime Conference (jprime.io) in May 2018

Transcript

1. BE REACTIVE AND MICRO WITH A MICROPROFILE STACK Ondrej Mihályi @omihalyi
2. WHAT DO WE WANT? @OMihalyi
3. there should be a PROBLEM to solve WHY DO WE WANT IT? @OMihalyi
4. BETTER USER EXPERIENCE updates when ready, reduced waiting errors raised ASAP users can react faster avoids unnecessary user retries @OMihalyi
5. HANDLE HIGH LOADS utilize resources at maximum (CPU) threads aren't wasted by blocking avoid blocking of new requests @OMihalyi
6. HANDLE MASSIVE LOADS scale to more nodes messaging to distribute the load @OMihalyi
7. DON'T FORGET ABOUT FAILURES fail fast and avoid waste make sure failures are handled failures happen a lot more in distributed systems @OMihalyi
8. WHAT IS MICROPROFILE? open-source specification for Java microservices ( ) microprofile.io @OMihalyi
9. REACTIVE SUPPORT IN MICROPROFILE Asynchronous REST (JAX-RS) CDI events Monitoring via Metrics @OMihalyi
10. MORE TO COME IN MICROPROFILE Reactive REST & SSE (Java EE 8) Async CDI events (Java EE 8) Async Fault Tolerance interceptors Reactive streams @OMihalyi
11. WE'LL ADD WHAT'S MISSING RxJava (Reactive Streams) handle callbacks and data streams asynchronous Fault Tolerance React.js easy updates on events @OMihalyi
12. OUR DEMO APPLICATION @OMihalyi
13. DEMO Source: https://github.com/OndrejM-demonstrations/Reactive-and-Micro- with-MicroProfile-and-Payara @OMihalyi
14. WE'LL ADD MORE Java EE 8 reactive REST client (JAX-RS) Server-Sent Events Kafka JCA connector Hazelcast distributed cache and other structures NoSQL distributed datastore @OMihalyi
15. DEMO @OMihalyi
16. PAYARA SERVER MicroProfile, Java EE, Hazelcast, Cloud JCA Connectors, CDI event bus dynamic clustering (suitable for cloud) fast development admin console monitoring @OMihalyi
17. PAYARA MICRO APIs as in Server (except SOAP, remote EJB) most of features of the Server executable JAR, <70 MB easier to install and run apps command line, maven plugin build uber JAR @OMihalyi
18. WHAT TO AVOID relying on request scope relying on thread local using synchronous CDI interceptors @OMihalyi
19. QUESTIONS? Thank you! @OMihalyi