Hands-On High Performance with Spring 5

封面

版权信息

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Contributors

About the authors

About the reviewer

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Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Download the color images

Conventions used

Get in touch

Reviews

Exploring Spring Concepts

Introducing the Spring Framework

Problems with EJB

Simplifying implementation using POJO

Benefits of the Spring Framework

No need to reinvent the wheel

Ease of unit testing

Reduction in implementing code

Inversion of control and API

Consistency in transaction management

Modular architecture

Up to date with time

Understanding Spring modules

Core Container

Crosscutting concerns

Data Access/Integration

Web

Spring projects

Spring Boot

Spring Data

Spring Batch

Spring Cloud

Spring Security

Spring HATEOAS

Spring's IoC container

What are Spring beans?

Instantiating a Spring container

BeanFactory

ApplicationContext

Spring bean life cycle

New features in the Spring Framework 5.0

Baseline upgrades

Reactive programming support

Core features upgrades

Spring Web MVC upgrades

Spring's new functional web framework – WebFlux

Modularity support

Kotlin language support

Improved testing support

Dropped or deprecated features

Summary

Spring Best Practices and Bean Wiring Configurations

Dependency injection configurations

Types of DI patterns

Constructor-based DI

Advantages of the constructor-based DI

Disadvantages of the constructor-based DI

Setter-based DI

Advantages of the setter-based DI

Disadvantages of the setter-based DI

Field-based DI

Constructor versus setter injection

Configuring the DI with Spring

XML-based configuration

Java-based configuration

Annotation-based configuration

The @Autowired annotation

@Autowired with required = false

The @Primary annotation

The @Qualifier annotation

Automatic bean detection with stereotype annotations

The @ComponentScan annotation

The @Lazy annotation

Spring bean scopes

Performance assessment with different configurations

Lazy loading versus preloading

Singleton versus prototype bean

Spring bean configuration best practices

DI pitfalls

First pitfall

Second pitfall (with AOP)

Summary

Tuning Aspect-Oriented Programming

AOP concepts

Limitations of OOP

Code tangling

Code scattering

AOP – problem solver

Spring AOP terminology and concepts

Defining pointcuts

Types of advice

Aspect instantiation models