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Learn and use the design patterns and best practices in Spring to solve common design problems and build user-friendly microservicesKey FeaturesStudy the benefits of using the right design pattern in your toolkitManage your code easily with Spring's dependency injection patternExplore the features of Docker and Mesos to build successful microservicesBook DescriptionGetting Started with Spring Microservices begins with an overview of the Spring Framework 5.0, its design patterns, and its guidelines that enable you to implement responsive microservices at scale. You will learn how to use GoF patterns in application design. You will understand the dependency injection pattern, which is the main principle behind the decoupling process of the Spring Framework and makes it easier to manage your code. Then, you will learn how to use proxy patterns in aspect-oriented programming and remoting. Moving on, you will understand the JDBC template patterns and their use in abstracting database access. After understanding the basics, you will move on to more advanced topics, such as reactive streams and concurrency. Written to the latest specifications of Spring that focuses on Reactive Programming, the Learning Path teaches you how to build modern, internet-scale Java applications in no time. Next, you will understand how Spring Boot is used to deploying serverless autonomous services by removing the need to have a heavyweight application server. You'll also explore ways to deploy your microservices to Docker and managing them with Mesos. By the end of this Learning Path, you will have the clarity and confidence for implementing microservices using Spring Framework.This Learning Path includes content from the following Packt products:Spring 5 Microservices by Rajesh R V Spring 5 Design Patterns by Dinesh RajputWhat you will learnDevelop applications using dependency injection patternsBuild web applications using traditional Spring MVC patternsUtilize the reactive programming pattern to build reactive web appsLearn concurrency and handle multiple connections inside a web serverUse Spring Boot and Spring Cloud to develop microservicesLeverage reactive programming to build cloud-native applicationsWho this book is forGetting Started with Spring Microservices is ideal for Spring developers who want to use design patterns to solve common design problems and build cloud-ready, Internet-scale applications, and simple RESTful services.

Create clean code with Dependency Injection principlesKey FeaturesUse DI to make your code loosely coupled to manage and test your applications easily on Spring 5 and Google GuiceLearn the best practices and methodologies to implement DIWrite more maintainable Java code by decoupling your objects from their implementationsBook DescriptionDependency Injection (DI) is a design pattern that allows us to remove the hard-coded dependencies and make our application loosely coupled, extendable, and maintainable. We can implement DI to move the dependency resolution from compile-time to runtime. This book will be your one stop guide to write loosely coupled code using the latest features of Java 9 with frameworks such as Spring 5 and Google Guice. We begin by explaining what DI is and teaching you about IoC containers. Then you'll learn about object compositions and their role in DI. You'll find out how to build a modular application and learn how to use DI to focus your efforts on the business logic unique to your application and let the framework handle the infrastructure work to put it all together. Moving on, you'll gain knowledge of Java 9's new features and modular framework and how DI works in Java 9. Next, we'll explore Spring and Guice, the popular frameworks for DI. You'll see how to define injection keys and configure them at the framework-specific level. After that, you'll find out about the different types of scopes available in both popular frameworks. You'll see how to manage dependency of cross-cutting concerns while writing applications through aspect-oriented programming. Towards the end, you'll learn to integrate any third-party library in your DI-enabled application and explore common pitfalls and recommendations to build a solid application with the help of best practices, patterns, and anti-patterns in DI. What you will learnUnderstand the benefits of DI and fo from a tightly coupled design to a cleaner design organized around dependenciesSee Java 9's new features and modular frameworkSet up Guice and Spring in an application so that it can be used for DIWrite integration tests for DI applicationsUse scopes to handle complex application scenariosIntegrate any third-party library in your DI-enabled applicationImplement Aspect-Oriented Programming to handle common cross-cutting concerns such as logging, authentication, and transactionsUnderstand IoC patterns and anti-patterns in DIWho this book is forThis book is for Java developers who would like to implement DI in their application. Prior knowledge of the Spring and Guice frameworks and Java programming is assumed.

Java EE stellt schon seit mehr als siebzehn Jahren eine verlässliche und tragfähige Plattform zur Entwicklung von Enterprise-Anwendungen dar. Waren die ersten Versionen bis zu J2EE 1.4 noch komplex und schwergewichtig, so ist die aktuelle Version trotz des großen Leistungsumfangs stark auf die Einfachheit der Softwareentwicklung fokussiert. Anwendungsentwicklung auf dieser Basis macht Spaß und ermöglicht schnelle Erfolge - dies möchte dieses Buch seinen Lesern vermitteln. Es zeigt anhand vieler Beispiele, wie einfach Software für die Java-EE-Plattform erstellt werden kann. Das Buch hat nicht den Anspruch einer allumfassenden Darstellung von Java EE. Vielmehr werden die für die leichtgewichtige Softwareentwicklung genutzten Teile der Gesamtspezifikation ohne Ballast verständlich erläutert. Dadurch wird stückweise ein leistungsfähiger, aber überschaubarer Stack für Enterprise-Anwendungen zusammengesetzt: von Java Persistence über CDI bis hin zur browserbasierten Oberfläche mit JavaServer Faces. Neben der Betrachtung einzelner Anwendungen spielen heute vernetzte Architekturen, anwendungsübergreifende Kommunikation, Microservices etc. eine immer stärkere Rolle. Dem trägt diese überarbeitete Auflage mit dem neu hinzugekommenen Kapitel über RESTful Web Services Rechnung. Ein durchgängiges Real-World-Beispielprojekt dient der weiteren Verdeutlichung und Abrundung. Hier werden alle behandelten Teile zu einer kompletten Anwendung zusammengesetzt, die in der diskutierten Form mittlerweile im Einsatz ist. Zielgruppe: Java-Enterprise-Entwickler, Projektleiter, IT-Architekten