Java Reactive Programming

Reactive Programming using Project Reactor and Spring. Build non-blocking, event-driven applications that are resilient, responsive, and scalable using the reactive programming paradigm.

Java Reactive Programming

Reactive Programming using Project Reactor and Spring. Build non-blocking, event-driven applications that are resilient, responsive, and scalable using the reactive programming paradigm.

Overview

Reactive programming represents a paradigm shift in how we build applications. By embracing non-blocking I/O and event-driven architecture, reactive applications can handle more concurrent users with fewer resources while providing better responsiveness and resilience.

This course provides a comprehensive understanding of reactive programming concepts and their implementation using Project Reactor and Spring WebFlux. You will learn to think reactively, work with Mono and Flux types, handle backpressure, and build complete reactive applications. Through practical exercises, you will understand when and how to apply reactive patterns to solve real-world challenges.

Objectives

The main objectives of the Java Reactive Programming course are:

Understanding reactive programming principles and the Reactive Manifesto
Mastering Project Reactor: Mono, Flux, and reactive operators
Building reactive REST APIs with Spring WebFlux
Implementing reactive data access with R2DBC and reactive MongoDB
Understanding backpressure and flow control strategies
Testing reactive applications with StepVerifier
Error handling and resilience patterns in reactive systems

Course Schedule

Day 1

Reactive fundamentals, Reactive Streams specification, and Project Reactor basics

Reactive principles and the Reactive Manifesto
Reactive Streams specification
Project Reactor: Mono and Flux

Day 2

Reactive operators, transformation, filtering, and combining streams

Reactive operators
Transformation and filtering
Combining streams

Day 3

Spring WebFlux, reactive REST APIs, and reactive data access

Reactive REST APIs with Spring WebFlux
Reactive data access with R2DBC
Reactive MongoDB

Day 4

Testing, error handling, backpressure, and practical workshop

Testing with StepVerifier
Backpressure and flow control
Error handling and resilience patterns
Practical workshop

Target Audience

This course is designed for developers ready to embrace reactive programming:

Java Developers - wanting to learn reactive programming paradigms
Spring Developers - looking to adopt Spring WebFlux
Backend Developers - building high-throughput, scalable services
Architects - designing reactive microservices architectures
Teams - transitioning from blocking to non-blocking architectures

Go Reactive

Prerequisites

Here are the prerequisites for the Java Reactive Programming course:

Strong Java knowledge: proficiency with Java 8+ features, especially lambdas and streams
Spring experience: familiarity with Spring Framework basics
Understanding of asynchronous concepts: callbacks, futures, and concurrent programming
REST API knowledge: experience building or consuming REST services

Testimonials

We really enjoyed Bogdan's training sessions. It's always cool to learn and have fun while doing them. He is very patient and always prepared to offer the best solution/explanation for any problem/question. ... I also love his ability to extend the context for each chapter, offering many smart hooks to integrate the concept in a broader picture, which makes it all easier to understand.

Sorin, Crossover

Bogdan is our coach who helped shape our vision to use Java and Spring/SpringBoot in today's marketplace. He is highly skilled, extremely passionate and has a strong work ethic. With his unique and practical approach, he taught us from technology fundamentals on up to software design and best practices. He is continuously helping us progress on a growing path in software development. I enjoy working with Bogdan very much and I consider him a friend.

Andrei, Óce

When we approached Bogdan for a Java training, our goal was to up-skill our team of PL/SQL developers in order to become proficient in Java. Bogdan has vast experience in the topics and very good communication and presentation skills. The pace was very good and he was very thorough in responding all questions, providing lots of related documentation for further study.

Radu, Nokia

Working with Bogdan is really inspiring and I always learn something new from his training and coaching sessions. All the training sessions are well-structured, use examples and employ hands-on components. What I enjoyed most during his training sessions is that they made me eager to learn more and to extend my knowledge. And it's not hard to do, thanks to the documentation that Bogdan provides for further reading.

Corina, Cerner

For a year and a half I've participated in various courses held by Bogdan, from Java 8, Spring, Maven to Docker. He has a good methodology, a strong background, he keeps you interested and he is open for discussions even after the training sessions, which is very important. Usually we have more questions after we start using the knowledge from the courses.

Ion, Sociéte Générale

I have participated in several training sessions held by Bogdan, including Java 8, Maven, CI & CD, Git and Spring. Every time we were thrilled to discover the information and best practices described, especially as he exemplified them with many hands-on examples. Furthermore, there were a few things present in each session that defined Bogdan's approach, namely, professionalism, vast knowledge and experience, innovative solutions, a great personality and a sense of humor.

Lavinia, Elysian

I am the self-learning type; I usually get bored at every course/training, very quickly. With this course, it was not the case. I payed attention ~95% of the time, which is very rare for me.

Ionuț, Nokia

I was pleasantly surprised by this course, being probably much more than other courses that can be found online. The presentation is very good, the materials are well structured and prepared, with many examples. Moreover, I consider the context information to be welcome, some of it was not very "settled" for me, such as the information about the application architecture, etc. Another plus regarding the training and the trainer is the fact that I managed to pay attention approximately 99% of the time, which I find amazing.

Dorina, ANAF

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