Miro Cupak explores 8 levels of reactive programming in Java, from the basic Thread and Runnable interfaces introduced in Java 1 to higher levels including reactive streams in Java 9, the HTTP/2 client in Java 11, and reactive libraries and microservices. The tweet thread outlines each level, noting the Java version it was introduced in, with the goal of explaining reactive programming concepts and discussing any questions.

1. @mirocupak
Exploring reactive
programming in Java
Miro Cupak
Co-founder & VP Engineering, DNAstack
November 02, 2019

2. @mirocupak
Live coding
2

3. @mirocupak 3
8 levels of reactive
Level 0: Thread & Runnable (Java 1+)
Level 1: ExecutorService, Callable, Future (Java 5+)
Level 2: ForkJoinPool (Java 7+)
Level 3: CompletableFuture (Java 8+)
Level 4: Flow & reactive streams (Java 9+)
Level 5: HTTP/2 client (Java 11+)
Level 6: Reactive libraries (RxJava, Reactor…)
Level 7: Reactive (micro)services (Vert.x, Spring WebFlux, Kafka…)
JDK

4. @mirocupak
Questions?
4