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

Chapter 7: Handling Microservice Concerns

Any microservice architecture implementation is incomplete without handling some fundamental microservice concerns such as configuration management, API documentation, service discovery, API gateways, and fault tolerance. Hitherto we were focused on the disintegration journey of the microservices, such as how to separate the concerns in modular microservices. For seamless and unified application access, we need the microservices to integrate and expose a coalesced interface. A coalesced interface enables the upstream consumers to interact with backend microservices as though they were one.

A key benefit of implementing microservices is fault tolerance. Fault tolerance mechanisms such as on-demand scaling, fallbacks, and circuit breakers make microservices ubiquitous and robust.

In this chapter, we will explore ways to handle and implement the following microservice concerns:

  • Externalizing the application configuration
  • Documenting...