Book Image

Hands-On Microservices with Kotlin

By : Juan Antonio Medina Iglesias
Book Image

Hands-On Microservices with Kotlin

By: Juan Antonio Medina Iglesias

Overview of this book

With Google's inclusion of first-class support for Kotlin in their Android ecosystem, Kotlin's future as a mainstream language is assured. Microservices help design scalable, easy-to-maintain web applications; Kotlin allows us to take advantage of modern idioms to simplify our development and create high-quality services. With 100% interoperability with the JVM, Kotlin makes working with existing Java code easier. Well-known Java systems such as Spring, Jackson, and Reactor have included Kotlin modules to exploit its language features. This book guides the reader in designing and implementing services, and producing production-ready, testable, lean code that's shorter and simpler than a traditional Java implementation. Reap the benefits of using the reactive paradigm and take advantage of non-blocking techniques to take your services to the next level in terms of industry standards. You will consume NoSQL databases reactively to allow you to create high-throughput microservices. Create cloud-native microservices that can run on a wide range of cloud providers, and monitor them. You will create Docker containers for your microservices and scale them. Finally, you will deploy your microservices in OpenShift Online.
Table of Contents (14 chapters)

Service discovery

Service Discovery Servers allow us to dynamically register the instances of our microservices. Having a dynamic list of instances could be used either by applications or other microservices when they need to perform a request. They help us to dynamically manage when instances are starting or stopping to give an accurate view on the scaling of our microservices. Finally, they provide a mechanism to disconnect instances where they are not available using a Heart-beat mechanism.

Spring Cloud provides a vendor-independent approach to Service Discovery. We can use a range of different implementations, such as Hashicorp Consul, Netflix Eureka, or Apache Zookeeper. In this section, we will learn how easily we can integrate with Eureka using Spring Cloud.

Creating a Service...