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 4: Securing the Microservices

Protecting microservices' interfaces as well as the world encompassed by them is a crucial facet for any application development. Various topologies, tools, and frameworks have arisen in recent times to address the security aspects of web services/microservices. In the course of this chapter, we will dive into some core and often-used security paradigms in microservices. We will continue with the pet-clinic application from the previous chapter. For hands-on work, we will work toward securing microservices while covering the following authentication strategies in the Micronaut framework:

  • pet-owner: Working hands-on to secure pet-owner microservice endpoints using session authentication
  • pet-clinic: Working hands-on to secure pet-clinic microservice endpoints using JWT authentication
  • pet-clinic-review: Working hands-on to secure pet-clinic-review microservice endpoints using OAuth authentication

With the aforementioned...