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, we covered various aspects of integrating a Micronaut application with relational as well as NoSQL databases. We explored different ways of persistence integration, that is, using ORM (Hibernate), a persistence framework (MyBatis), or a driver-based framework (MongoDB Sync). In each technique, we covered, in depth, how to define entities, relationships, repositories, and services. Each microservice defined a simple command-line utility to exhibit common CRUD operations.

This chapter has given us the skills to cover almost all the data access aspects in Micronaut. In the rest of the book, we will further explore and use these skills and learnings by doing more hands-on exercises and covering other aspects of the Micronaut framework.

In the next chapter, we will work on the web layer of the pet-clinic application, defining various REST endpoints in all the microservices.