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Building Applications with Spring 5 and Kotlin

By : Vasić

3 (1)

Buy this Book

Building Applications with Spring 5 and Kotlin

3 (1)

By: Vasić

Buy this Book

Overview of this book

Kotlin is being used widely by developers because of its light weight, built-in null safety, and functional and reactive programming aspects. Kotlin shares the same pragmatic, innovative and opinionated mindset as Spring, so they work well together. Spring when combined with Kotlin helps you to reach a new level of productivity. This combination has helped developers to create Functional Applications using both the tools together. This book will teach you how to take advantage of these developments and build robust, scalable and reactive applications with ease. In this book, you will begin with an introduction to Spring and its setup with Kotlin. You will then dive into assessing the design considerations of your application. Then you will learn to use Spring (with Spring Boot) along with Kotlin to build a robust backend in a microservice architecture with a REST based collaboration, and leverage Project Reactor in your application. You’ll then learn how to integrate Spring Data and Spring Cloud to manage configurations for database interaction and cloud deployment. You’ll also learn to use Spring Security to beef up security of your application before testing it with the JUnit framework and then deploying it on a cloud platform like AWS.

Preface

Who this book is for

What this book covers

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Free Chapter

Starting Up

What is your mission?

Separating code into independent entities

Planning your development

Preparing the working environment

Setting up a Git repository

Summary

Starting with Spring

What is Spring?

Creating Spring project

Creating Spring project with IntelliJ

Summary

Building Your First Spring RESTful Service with Kotlin

Defining dependencies for our project

Our first controller

Adding a data class

Running the application

Adding an @Service component

Summary

Working with Spring Data JPA and MySQL

Introducing Spring Data JPA

Installing MySQL

Creating a schema

CRUD operations

Creating database queries

Summary

Securing Applications with Spring Security

Introducing Spring Security

Securing your REST API with basic authentication

What else can Spring Security do?

Summary

Spring Cloud

Microservice architecture versus SOA

Understanding microservice architectures

Microservices with Spring Cloud

Securing Spring Cloud services

Summary

Using Project Reactor

Why use Project Reactor?

What is Project Reactor?

Using Project Reactor

Summary

Development Practices

Challenging development practices

Good ways to develop your code

Summary

Testing

Why is testing a crucial part of development?

Preparing our project

Writing our first test with Kotlin

Running the test in InteliJ IDEA

Testing Spring REST applications

Running test suites

Summary

Project Deployment

What will be deployed?

Deployment options

Deploying to the Cloud (AWS)

Summary

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Project Deployment

We have reached the end of our journey. In the previous chapter, we wrote some tests to confirm that our code is working properly. In this chapter, we will release our Spring application into production. We will cover examples of how to publish it step by step and provide you with guidelines and advice for further reading on this subject.

In this final chapter of the book, we will cover the following: