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Hands-On Microservices with Kotlin

Hands-On Microservices with Kotlin

By : Medina Iglesias
4.4 (8)
Buy this Book
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Hands-On Microservices with Kotlin

Hands-On Microservices with Kotlin

4.4 (8)
By: Medina Iglesias
Buy this Book

Overview of this book

With Google's inclusion of first-class support for Kotlin in their Android ecosystem, Kotlin's future as a mainstream language is assured. Microservices help design scalable, easy-to-maintain web applications; Kotlin allows us to take advantage of modern idioms to simplify our development and create high-quality services. With 100% interoperability with the JVM, Kotlin makes working with existing Java code easier. Well-known Java systems such as Spring, Jackson, and Reactor have included Kotlin modules to exploit its language features. This book guides the reader in designing and implementing services, and producing production-ready, testable, lean code that's shorter and simpler than a traditional Java implementation. Reap the benefits of using the reactive paradigm and take advantage of non-blocking techniques to take your services to the next level in terms of industry standards. You will consume NoSQL databases reactively to allow you to create high-throughput microservices. Create cloud-native microservices that can run on a wide range of cloud providers, and monitor them. You will create Docker containers for your microservices and scale them. Finally, you will deploy your microservices in OpenShift Online.
Table of Contents (14 chapters)
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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Get in touch
Free Chapter
1
Understanding Microservices
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Understanding Microservices
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What is a microservice?
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Microservices principles
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Domain-Driven Design
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Reactive microservices
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Cloud Native microservices
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Summary
2
Getting Started with Spring Boot 2.0
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Getting Started with Spring Boot 2.0
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Creating a Spring Boot application
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Spring Boot application structure
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Packaging and running a Spring Boot application
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Configuring our application
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Summary
3
Creating RESTful Services
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Creating RESTful Services
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Understanding RestController
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Path and request parameters
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HTTP verbs and statuses
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Working with JSON
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Handling errors
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Summary
4
Creating Reactive Microservices
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Creating Reactive Microservices
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Understanding Spring WebFlux
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Creating reactive services
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Using functional web programming
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Handling reactive errors
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Summary
5
Reactive Spring Data
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Reactive Spring Data
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NoSQL databases
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Using Spring Data
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Reactive repositories
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From CRUD to REST
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Summary
6
Creating Cloud-Native Microservices
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Creating Cloud-Native Microservices
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Understanding Spring Cloud
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Configuration Server
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Service discovery
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Gateway
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Summary
7
Creating Dockers
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Creating Dockers
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Starting with Docker
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Building Dockers with microservices
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Publishing Dockers
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Summary
8
Scaling Microservices
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Scaling Microservices
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A scalable architecture
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Creating a Cloud
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Publishing a microservice as a service
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Controlling services
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Summary
9
Testing Spring Microservices
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Testing Spring Microservices
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Understanding SpringBootTest
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Mocking beans
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Fluent tests
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Summary
10
Monitoring Microservices
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Monitoring Microservices
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Understanding monitoring
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SpringBoot Actuator
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Java Managing Extensions
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Summary
11
Deploying Microservices
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Deploying Microservices
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Setting things up
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Building our application
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Publishing to OpenShift
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Summary
12
Best Practices
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Best Practices
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Using Kotlin idioms
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Managing the Spring context
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Layering the application
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Testing effectively
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Handling CI and CD
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Summary
13
Other Books You May Enjoy
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Other Books You May Enjoy
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Leave a review - let other readers know what you think

Deploying Microservices

To have our microservices ready in our production environments, we need to deploy them, and this task may look trivial, but it can become an impediment to delivering the pace and speed required by our application. In this chapter, we will be using OpenShift Online to understand how we can easily and effectively deploy microservices, and how this can be done in such a way that allows us to deliver the best quality at the best speed. To help us in this task, we will be using Git, the industry standard control version system, to simplify our deployments.

In this chapter, you will learn about:

  • OpenShift Online
  • Git
  • GitHub
  • Deployments
  • Webhooks

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