Book Image

Building Microservices with Micronaut®

By : Nirmal Singh, Zack Dawood
Book Image

Building Microservices with Micronaut®

By: Nirmal Singh, Zack Dawood

Overview of this book

The open source Micronaut® framework is a JVM-based toolkit designed to create microservices quickly and easily. This book will help full-stack and Java developers build modular, high-performing, and reactive microservice-based apps using the Micronaut framework. You'll start by building microservices and learning about the core components, such as ahead-of-time compilation, reflection-less dependency injection, and reactive baked-in HTTP clients and servers. Next, you will work on a real-time microservice application and learn how to integrate Micronaut projects with different kinds of relational and non-relational databases. You'll also learn how to employ different security mechanisms to safeguard your microservices and integrate microservices using event-driven architecture in the Apache Kafka ecosystem. As you advance, you'll get to grips with automated testing and popular testing tools. The book will help you understand how you can easily handle microservice concerns in Micronaut projects, such as service discovery, API documentation, distributed configuration management, fallbacks, and circuit breakers. Finally, you'll explore the deployment and maintenance aspects of microservices and get up to speed with the Internet of Things (IoT) using the Framework. By the end of this book, you'll be able to build, test, deploy, and maintain your own microservice apps using the framework.
Table of Contents (20 chapters)
Section 1: Core Concepts and Basics
Section 2: Microservices Development
Section 3: Microservices Testing
Section 4: Microservices Deployment
Section 5: Microservices Maintenance
Section 6: IoT with Micronaut and Closure


In this chapter, you learned how to handle various microservice concerns in the Micronaut framework. We kickstarted the journey by externalizing the application configurations using Consul and learned why distributed configuration management is required in the microservices. We then dived into how to automate API documentation using OpenAPI and Swagger. Later, we discussed service discovery and the API gateway and implemented those in the pet clinic application.

At last, we explored the need for fault tolerance and how you can simply use the built-in mechanism in the Micronaut framework for building resilience in your microservices application.

This chapter has equipped you with all the first-hand knowledge you require to handle various microservice concerns relating to service discovery, API gateways, and fault tolerance. The chapter took a practical approach by adding to the pet-clinic application while covering these aspects.

In the next chapter, you will explore...