Functional Reactive Spring

Softwareentwicklung mit Open Source

9:10 – 17:00 Uhr
ETH Zürich
Max. Teilnehmer: 25


In this Workshop, we will use Spring Framework 5 to write Functional Reactive code and will answer the following questions.

  • What is Functional Programming?
  • What is Reactive Programming?
  • What is Functional Reactive Programming?

Functional Reactive Programming is a hot trend in the Java world and also introduced in Spring Framework 5. This new paradigm allows you to effectively work with streams of data.

You’ll get hands on experience with building a Reactive application to stream data leveraging the newly available Reactive data types, Spring WebFlux and Spring Data.


  • Introduction Reactive Streams, Publisher/Subscriber types and Reactor types
  • Using Spring WebFlux
  • Functional configuration API for Spring WebFlux
  • Using Spring Data MongoDB to reactively stream data
  • Using Reactive Types with Thymeleaf
  • Using Spring Security Reactive
  • Using Reactive RabbitMQ with Spring
  • Using Reactive Redis with Spring


Participants will build and test the individual parts of a Spring Boot microservices infrastructure themselves. We will use different tools and demonstrate the interaction between them. At the end of the day, participants will take along a backpack of tools, working techniques and terms that will help them successfully implement reactive components with Spring Boot. The example project realised in the workshop can later serve as a basis for own projects.


This workshop is targeted at developers and architects who are new to reactive programming and want to learn how to use the Spring ecosystem to get started.


  • Participants should have some prior knowledge about Java and the Spring Framework/Ecosystem.
  • The workshop will be held in English.


In order to participate, you will need:

  • A laptop with at enough spare disk space and RAM
  • Java, Maven and your favourite IDE installed (Eclipse, Spring STS, IntelliJ, Netbeans)


Patrick Baumgartner


Patrick Baumgartner works as a passionate software crafter at 42talents and builds software with Java, the Spring ecosystem, OSGi, Neo4j and ElasticSearch and other open source technologies. In the software crafter community, he co-organises the Software Craftsmanship Zurich Meetup and runs the SoCraTes Conference Switzerland and is involved VoxxedDays Zürich and other events. Besides that, he teaches at ZHAW Zurich University of Applied Science and speaks regularly at conferences about Software Craft and technical topics around Java and Spring. Twitter: @patbaumgartner, @42talents

Zoltan Altfatter


Zoltan Altfatter is a software crafter working as a software architect at mimacom Zürich. He is passionate about JVM and the Spring ecosystem. Twitter: @altfatterz