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

Working on the basics of Alexa skills

Alexa is a cloud-based voice recognition service available on millions of devices from Amazon and third-party device manufacturers, such as televisions, Bluetooth speakers, headphones, automobiles, and so on. You can build interactive voice-based request-response applications using Alexa.

Alexa can be integrated into various applications. Alexa also has screen capabilities for displaying responses visually, and Echo Show is an Alexa speaker with a display screen. The following diagram illustrates the Amazon Alexa architecture:

Figure 10.2 – Amazon Alexa architecture

Users can say the wake-up word for the device, which is Alexa, and perform an operation. For example, to find the weather in your current location, you can say Alexa, what is the current weather? and you will receive a response, such as The current weather in your location is 28 degrees. Alexa skills are like apps, and you can enable or disable...