Developing Reactive Microservices

E-Book

Developing Reactive Microservices

By Markus Eisele, Enterprise Advocate, Lightbend, Inc.

By Markus Eisele, Enterprise Advocate, Lightbend, Inc. and

With microservices taking the software industry by storm, traditional enterprises running large, monolithic Java EE applications have been forced to rethink what they’ve been doing for nearly two decades. But how can microservices built upon reactive principles make a difference?

In this O’Reilly report, author Markus Eisele walks Java developers through the creation of a complete reactive microservices-based system. You’ll learn that while microservices are not new, the way in which these independent services can be distributed and connected back together certainly is. The result? A system that’s easier to deploy, manage, and scale than a typical Java EE-based infrastructure.

With this report, you will:

  • Get an overview of the Reactive Programming model and basic requirements for developing reactive microservices
  • Learn how to create base services, expose endpoints, and then connect them with a simple, web-based user interface
  • Understand how to deal with persistence, state, and clients
  • Use integration technologies to start a successful migration away from legacy systems

The detailed example in this report is based on Lagom, a new framework that helps you follow the requirements for building distributed, reactive systems. Available on GitHub as an Apache-licensed open source project, this example is freely available for download.

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About Author

Markus Eisele, Enterprise Advocate, Lightbend, Inc.

Markus Eisele is a Java Champion, former Java EE Expert Group member, Java community leader of German DOAG, founder of JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world. He works for Lightbend.


You’ve known and seen him at different conferences and Java User Groups meetups or read his blogs or are following his social media presence. While talking about middleware for many years you’ll continue to hear him talk about enterprise grade Java going forward. Focussed on education about the latest trends in building enterprise systems in a reactive way with Java.


He’s been looking into containers and microservices architectures more deeply and also wrote a book about modern Java EE Design Patterns with O’Reily. He is excited to educate more about how microservices architectures can integrate and complement existing platforms, and will also talk about how to successfully build resilient applications with Java.

About Authors

Markus Eisele, Enterprise Advocate, Lightbend, Inc.

Markus Eisele is a Java Champion, former Java EE Expert Group member, Java community leader of German DOAG, founder of JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world. He works for Lightbend.


You’ve known and seen him at different conferences and Java User Groups meetups or read his blogs or are following his social media presence. While talking about middleware for many years you’ll continue to hear him talk about enterprise grade Java going forward. Focussed on education about the latest trends in building enterprise systems in a reactive way with Java.


He’s been looking into containers and microservices architectures more deeply and also wrote a book about modern Java EE Design Patterns with O’Reily. He is excited to educate more about how microservices architectures can integrate and complement existing platforms, and will also talk about how to successfully build resilient applications with Java.

About Lightbend

Lightbend (Twitter: @Lightbend) is dedicated to helping developers build Reactive applications on the JVM. With the Lightbend Reactive Platform, developers can create message-driven applications that scale on multicore and cloud computing architectures by using projects like Lagom, Play Framework, Akka, Scala, Java, and Apache Spark. To help our customers succeed, Lightbend partners with technology pioneers such as Databricks, IBM, and Mesosphere.