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  • Mastering Spring 5.0
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Mastering Spring 5.0

Mastering Spring 5.0

By : In28Minutes Official
3.7 (3)
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Mastering Spring 5.0

Mastering Spring 5.0

3.7 (3)
By: In28Minutes Official

Overview of this book

Spring 5.0 is due to arrive with a myriad of new and exciting features that will change the way we’ve used the framework so far. This book will show you this evolution—from solving the problems of testable applications to building distributed applications on the cloud. The book begins with an insight into the new features in Spring 5.0 and shows you how to build an application using Spring MVC. You will realize how application architectures have evolved from monoliths to those built around microservices. You will then get a thorough understanding of how to build and extend microservices using Spring Boot. You will also understand how to build and deploy Cloud-Native microservices with Spring Cloud. The advanced features of Spring Boot will be illustrated through powerful examples. We will be introduced to a JVM language that’s quickly gaining popularity - Kotlin. Also, we will discuss how to set up a Kotlin project in Eclipse. By the end of the book, you will be equipped with the knowledge and best practices required to develop microservices with the Spring Framework.
Table of Contents (14 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Evolution to Spring Framework 5.0
Evolution to Spring Framework 5.0
Spring Framework
Why is Spring Framework popular?
Spring modules
Spring Projects
New features in Spring Framework 5.0
Spring Boot 2.0 new features
Summary
2
Dependency Injection
Dependency Injection
Understanding dependency injection
Summary
3
Building a Web Application with Spring MVC
Building a Web Application with Spring MVC
Java web application architecture
Basic flows
An overview of Spring MVC
Important concepts behind Spring MVC
Spring MVC - advanced features
Spring Security
Summary
4
Evolution toward Microservices and Cloud-Native Applications
Evolution toward Microservices and Cloud-Native Applications
Typical web application architecture with Spring
Problems solved by Spring
Application development goals
Challenges with monolithic applications
Understanding microservices
Cloud-Native applications
Spring projects
Summary
Spring Framework
Why is Spring Framework popular?
Spring modules
Spring Projects
New features in Spring Framework 5.0
Spring Boot 2.0 new features
Summary
5
Building Microservices with Spring Boot
Building Microservices with Spring Boot
What is Spring Boot?
Spring Boot Hello World
What is REST?
First REST service
Creating a todo resource
Spring Initializr
A quick peek into auto-configuration
Summary
6
Extending Microservices
Extending Microservices
Exception handling
HATEOAS
Validation
Documenting REST services
Securing REST services with Spring Security
Internationalization
Caching
Summary
7
Advanced Spring Boot Features
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Advanced Spring Boot Features
Externalised configuration
Embedded servers
Developer tools
Spring Boot Actuator
Deploying ;an application to Cloud
Summary
8
Spring Data
Spring Data
Background - data stores
Spring Data
Spring Data Rest
Big Data
Summary
9
Spring Cloud
Spring Cloud
Introducing Spring Cloud
Demo microservices setup
Centralized microservice configuration
Spring Cloud Bus
Declarative REST Client - Feign
Load balancing
The Name server
Workings of Name server
API Gateways
Distributed tracing
Hystrix - fault tolerance
Summary
10
Spring Cloud Data Flow
Spring Cloud Data Flow
Message-based asynchronous communication
Spring projects for asynchronous messages
Spring Cloud Stream
Spring Cloud Data Flow
Spring Cloud Task
Summary
11
Reactive Programming
Reactive Programming
The Reactive Manifesto
Reactive use case - a stock price page
Reactive programming in Java
Summary
12
Spring Best Practices
Spring Best Practices
Maven standard directory layout
Layered architecture
Exception handling
Keeping your Spring configuration light
Managing dependency versions for Spring Projects
Unit testing
Integration testing
Caching
Logging
Summary
13
Working with Kotlin in Spring
Working with Kotlin in Spring
Kotlin
Kotlin versus Java
Creating a Kotlin project in Eclipse
Creating a Spring Boot project using Kotlin
Implementing a REST service using Kotlin
Summary

Embedded servers

One of the important concepts Spring Boot brings in is embedded servers.

Let's first understand the difference between traditional Java web application deployment and this new concept called embedded server.

Traditionally, with Java web applications, we build Web Application Archive (WAR) or Enterprise Application Archive (EAR) and deploy them into servers. Before we can deploy a WAR ;on the server, we need a web server or an application server installed on the server. The application server would be on top of the Java instance installed on the server. So, we need Java and an application (or web server) installed on the machine before we can deploy our application. The following figure shows an example installation in Linux:

Spring Boot brings in the concept of embedded servers, where the web server is part of the application deployable--JAR. To deploy applications...

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