John Carnell

JOHN CARNELL is a senior cloud engineer at Genesys, where he works in Genesys’s PureCloud division. John spends the majority of his day hands-on building telephony-based microservices using the AWS platform. His day-to-day job centers on designing and building microservices across a number of technology platforms including Java, Clojure, and Go.

John is a prolific speaker and writer. He regularly speaks at local user groups and has been a regular speaker on “The No Fluff Just Stuff Software Symposium.” Over the last 20 years, John has authored, co-authored, and been a technical reviewer for a number of Java-based technology books and industry publications.

John holds a Bachelor of the Arts (BA) from Marquette University and a Masters of Business Administration (MBA) from the University of Wisconsin Oshkosh.

John is a passionate technologist and is constantly exploring new technologies and programming languages. When John isn’t speaking, writing, or coding, he lives with his wife Janet, his three children, Christopher, Agatha, and Jack, and yes, his dog Vader, in Cary, North Carolina.

During his free time (which there’s very little of) John runs, chases after his children, and studies Filipino martial arts.

John can be reached at john_carnell@yahoo.com.

books by John Carnell

Spring Microservices in Action, Second Edition
  • May 2021
  • ISBN 9781617296956
  • 448 pages
Included with a Manning Online subscription
  • printed in black & white
  • Available translations: Korean, Russian, Simplified Chinese
catalog / Software Development / Software Engineering / Distributed Systems / Microservices

Spring Microservices in Action, Second Edition teaches you to build microservice-based applications using Java and Spring. You’ll start by creating basic services, then move to efficient logging and monitoring. Learn to refactor Java applications with Spring’s intuitive tooling, and master API management with Spring Cloud Gateway. You’ll even deploy Spring Cloud applications with AWS and Kubernetes.

Exploring Microservice Development
  • March 2018
  • ISBN 9781617295591
  • 88 pages
Included with a Manning Online subscription

Get into the microservices mindset without drowning in the details. Before you start writing code, you need to understand when a microservice architecture makes sense, what has to change in your team organization, and how this approach affects your build, test, and deploy process. There's plenty to learn when you get down to the nuts-and-bolts of building microservices; starting with the big picture makes the details a lot easier to grok.

Exploring Microservice Development is a collection of chapters from three Manning books. Hand-picked by senior cloud engineer John Carnell, this quick-start guide introduces the big picture of microservice design along with a high-level taste of operational concerns like debugging and testing. In it, you'll get a quick overview of decomposition strategies, a look into distributed tracing with Spring Cloud Sleuth and Zipkin for more efficient debugging, and over-the-wire service mocking using Mountebank. When you finish, you'll have a better idea of whether microservices are for you and what you need to get started.

Spring Microservices in Action
  • June 2017
  • ISBN 9781617293986
  • 384 pages
Included with a Manning Online subscription
  • printed in black & white
  • Available translations: Korean, Simplified Chinese
catalog / Programming Languages and Styles / Java

Spring Microservices in Action teaches you how to build microservice-based applications using Java and the Spring platform. You'll learn to do microservice design as you build and deploy your first Spring Cloud application. Throughout the book, carefully selected real-life examples expose microservice-based patterns for configuring, routing, scaling, and deploying your services. You'll see how Spring's intuitive tooling can help augment and refactor existing applications with microservices.