Learning Quarkus

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Learning Rxjava

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Author : Nick Samoylov
language : en
Publisher: Packt Publishing Ltd
Release Date : 2020-02-28

Learning Rxjava written by Nick Samoylov and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-28 with Computers categories.

Updated with the latest Maven coordinates, Java programming features, and API changes, this book is your guide to solving problems in writing asynchronous and event-based programs Key FeaturesExplore a variety of tools and techniques used to solve problems in implementing concurrency and parallelizationLearn about core operators in RxJava that enable you to express your code logic productivelyApply RxJava with Kotlin to create responsive Android apps with better user experienceBook Description RxJava is not just a popular library for building asynchronous and event-based applications; it also enables you to create a cleaner and more readable code base. In this book, you’ll cover the core fundamentals of reactive programming and learn how to design and implement reactive libraries and applications. Learning RxJava will help you understand how reactive programming works and guide you in writing your first example in reactive code. You’ll get to grips with the workings of Observable and Subscriber, and see how they are used in different contexts using real-world use cases. The book will also take you through multicasting and caching to help prevent redundant work with multiple Observers. You’ll then learn how to create your own RxJava operators by reusing reactive logic. As you advance, you’ll explore effective tools and libraries to test and debug RxJava code. Finally, you’ll delve into RxAndroid extensions and use Kotlin features to streamline your Android apps. By the end of this book, you'll become proficient in writing reactive code in Java and Kotlin to build concurrent applications, including Android applications. What you will learnDiscover different ways to create Observables, Observers, and SubscribersMulticast in order to push data to multiple destinations and cache and replay themExpress RxJava idiomatically with the help of Kotlin features such as extension functions and data classesBecome familiar with various operators available in RxJava to perform common transformations and tasksExplore RxJava’s reactive types, including Flowable, Single, Maybe, and CompletableDemystify Observables and how they express data and events as sequencesWho this book is for This book is for Java developers who want to leverage reactive programming to develop more resilient and concurrent applications. If you're an RxJava user looking to get to grips with the latest features and updates in RxJava 3, this book is for you. Fundamental knowledge of core Java features and object-oriented programming will assist you in understanding the key concepts covered in this book.

Generative Ai Driven Application Development With Java

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Author : Satej Kumar Sahu
language : en
Publisher: Springer Nature
Release Date : 2026-01-01

Generative Ai Driven Application Development With Java written by Satej Kumar Sahu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2026-01-01 with Computers categories.

This is the first hands-on guide that takes you from a simple “Hello, LLM” to production-ready microservices, all within the JVM. You’ll integrate hosted models such as OpenAI’s GPT-4o, run alternatives with Ollama or Jlama, and embed them in Spring Boot or Quarkus apps for cloud or on-pre deployment. You’ll learn how prompt-engineering patterns, Retrieval-Augmented Generation (RAG), vector stores such as Pinecone and Milvus, and agentic workflows come together to solve real business problems. Robust test suites, CI/CD pipelines, and security guardrails ensure your AI features reach production safely, while detailed observability playbooks help you catch hallucinations before your users do. You’ll also explore DJL, the future of machine learning in Java. This book delivers runnable examples, clean architectural diagrams, and a GitHub repo you can clone on day one. Whether you’re modernizing a legacy platform or launching a green-field service, you’ll have a roadmap for adding state-of-the-art generative AI without abandoning the language—and ecosystem—you rely on. What You Will Learn Establish generative AI and LLM foundations Integrate hosted or local models using Spring Boot, Quarkus, LangChain4j, Spring AI, OpenAI, Ollama, and Jlama Craft effective prompts and implement RAG with Pinecone or Milvus for context-rich answers Build secure, observable, scalable AI microservices for cloud or on-prem deployment Test outputs, add guardrails, and monitor performance of LLMs and applications Explore advanced patterns, such as agentic workflows, multimodal LLMs, and practical image-processing use cases Who This Book Is For Java developers, architects, DevOps engineers, and technical leads who need to add AI features to new or existing enterprise systems. Data scientists and educators will also appreciate the code-first, Java-centric approach.

Learning Quarkus

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Author : Frank P Moley III
language : en
Publisher:
Release Date : 2021

Learning Quarkus written by Frank P Moley III and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.

Running Java applications, especially in a containerized cloud-native environment, can be a resource-heavy and expensive endeavor, and the prospect of a framework with a smaller footprint with all the power of Java is very appealing. Enter Quarkus, a Kubernetes-based framework that delivers the power of the Java development language and ecosystem with fewer resource needs. In this course, Frank Moley gives an introduction to Quarkus, starting with the basics and then illustrating the framework through a series of challenges and solutions. By the end of the course, it should be clear why Quarkus is quickly becoming one of the most exciting frameworks for building Java-based microservices and cloud-native components.

Modernizing Enterprise Java

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Author : Markus Eisele
language : en
Publisher: "O'Reilly Media, Inc."
Release Date : 2021-10-21

Modernizing Enterprise Java written by Markus Eisele and has been published by "O'Reilly Media, Inc." this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-21 with Computers categories.

While containers, microservices, and distributed systems dominate discussions in the tech world, the majority of applications in use today still run monolithic architectures that follow traditional development processes. This practical book helps developers examine long-established Java-based models and demonstrates how to bring these monolithic applications successfully into the future. Relying on their years of experience modernizing applications, authors Markus Eisele and Natale Vinto walk you through the steps necessary to update your organization's Java applications. You'll discover how to dismantle your monolithic application and move to an up-to-date software stack that works across cloud and on-premises installations. Learn cloud native application basics to understand what parts of your organization's Java-based applications and platforms need to migrate and modernize Understand how enterprise Java specifications can help you transition projects and teams Build a cloud native platform that supports effective development without falling into buzzword traps Find a starting point for your migration projects by identifying candidates and staging them through modernization steps Discover how to complement a traditional enterprise Java application with components on top of containers and Kubernetes

Persistence Best Practices For Java Applications

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Author : Otavio Santana
language : en
Publisher: Packt Publishing Ltd
Release Date : 2023-08-25

Persistence Best Practices For Java Applications written by Otavio Santana and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-25 with Computers categories.

The definitive guide for designing and delivering reliable and high-performing persistence layers using Java in the cloud-native age Purchase of the print or Kindle book includes a free PDF eBook Key Features Uncover database patterns for designing readable and maintainable architectures and Java applications Master various techniques to overcome application and architecture persistence challenges Discover painless application modernization with change-data-capture powered by cloud-native technologies Book Description Having a solid software architecture breathes life into tech solutions. In the early stages of an application's development, critical decisions need to be made, such as whether to go for microservices, a monolithic architecture, the event-driven approach, or containerization. In Java contexts, frameworks and runtimes also need to be defi ned. But one aspect is often overlooked – the persistence layer – which plays a vital role similar to that of data stores in modern cloud-native solutions. To optimize applications and data stores, a holistic understanding of best practices, technologies, and existing approaches is crucial. This book presents well-established patterns and standards that can be used in Java solutions, with valuable insights into the pros and cons of trending technologies and frameworks used in cloud-native microservices, alongside good Java coding practices. As you progress, you'll confront the challenges of cloud adoption head-on, particularly those tied to the growing need for cost reduction through stack modernization. Within these pages, you'll discover application modernization strategies and learn how enterprise data integration patterns and event-driven architectures enable smooth modernization processes with low-to-zero impact on the existing legacy stack. What you will learn Gain insights into data integration in Java services and the inner workings of frameworks Apply data design patterns to create a more readable and maintainable design system Understand the impact of design patterns on program performance Explore the role of cloud-native technologies in modern application persistence Optimize database schema designs and leverage indexing strategies for improved performance Implement proven strategies to handle data storage, retrieval, and management efficiently Who this book is for If you're a developer, engineer, or software architect working in the field of software development, particularly with a focus on Java solutions, this book is for you.

Reactive Systems In Java

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Author : Clement Escoffier
language : en
Publisher: "O'Reilly Media, Inc."
Release Date : 2021-11-10

Reactive Systems In Java written by Clement Escoffier and has been published by "O'Reilly Media, Inc." this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-10 with Computers categories.

Reactive systems and event-driven architecture are becoming essential to application design--and companies are taking note. Reactive systems ensure applications are responsive, resilient, and elastic no matter what failures, latency, or other errors may be occurring, while event-driven architecture offers a flexible and composable option for distributed systems. This practical resource helps you bring these approaches together using Quarkus, a Java framework that greatly simplifies the work developers must undertake for cloud deployments. This book covers how Quarkus 2.0 reactive features allow the smooth development of reactive systems. Clement Escoffier and Ken Finnigan from Red Hat show you how to take advantage of event-driven and reactive principles to build more robust distributed systems, reducing latency and increasing throughput, particularly in your microservices and serverless applications. Java developers will also get a foundation in Quarkus, enabling you to create truly Kubernetes-native applications for the cloud. Understand the fundamentals of reactive systems and event-driven architecture Learn how to use Quarkus to build reactive applications Combine Quarkus with Apache Kafka or AMQP to build reactive systems Develop microservices that utilize messages with Quarkus for use in event-driven architectures.

Beginning Quarkus Framework

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Author : Tayo Koleoso
language : en
Publisher: Apress
Release Date : 2020-09-17

Beginning Quarkus Framework written by Tayo Koleoso and has been published by Apress this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-17 with Computers categories.

Harness the power of Quarkus, the supersonic subatomic cloud-native Java platform from Red Hat. This book covers everything you need to know to get started with the platform, which has been engineered from the ground up for superior performance and cloud-native deployment. You’ll start with an overview of the Quarkus framework and its features. Next, you'll dive into building your first microservice using Quarkus, including the use of JAX-RS, Swagger, Microprofile, REST, reactive programming, and more. You’ll see how to seamlessly add Quarkus to existing Spring framework projects. The book continues with a dive into the dependency injection pattern and how Quarkus supports it, working with annotations and facilities from both Jakarta EE CDI and the Spring framework. You’ll also learn about dockerization and serverless technologies to deploy your microservice. Next you’ll cover how data access works in Quarkus with Hibernate, JPA, Spring Boot, MongoDB, and more. This will also give you an eye for efficiency with reactive SQL, microservices, and many more reactive components. You’ll also see tips and tricks not available in the official documentation for Quarkus. Lastly, you'll test and secure Quarkus-based code and use different deployment scenarios to package and deploy your Quarkus-based microservice for the cloud, using Amazon Web Services as a focus. After reading and using Beginning Quarkus Framework, you'll have the essentials to build and deploy cloud-native microservices and full-fledged applications. Author Tayo Koleoso goes to great lengths to ensure this book has up to date material including brand new and some unreleased features! What You Will Learn Build and deploy cloud-native Java applications with Quarkus Create Java-based microservices Integrate existing technologies such as the Spring framework and vanilla Java EE into the Quarkus framework Work with the Quarkus data layer on persistence with SQL, reactive SQL, and NoSQL Test code in Quarkus with the latest versions of JUnit and Testcontainers Secure your microservices with JWT and other technologies Package your microservices with Docker containers and GraalVM native image tooling Tips and techniques you won't find in the official Quarkus documentation Who This Book Is For Intermediate Java developers familiar with microservices, the cloud in general, and REST web services, but interested in modern approaches.

Hands On Cloud Native Applications With Java And Quarkus

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Author : Francesco Marchioni
language : en
Publisher: Packt Publishing Ltd
Release Date : 2019-12-13

Hands On Cloud Native Applications With Java And Quarkus written by Francesco Marchioni and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-13 with Computers categories.

Build robust and reliable Java applications that works on modern infrastructure, such as containers and cloud, using the new features in Quarkus 1.0 Key FeaturesBuild apps with faster boot time and low RSS memory using the latest Quarkus 1.0 featuresSeamlessly integrate imperative and reactive programming models to build modern Java applicationsDiscover effective solutions for running Java on serverless apps, microservices, containers, FaaS, and the cloudBook Description Quarkus is a new Kubernetes-native framework that allows Java developers to combine the power of containers, microservices, and cloud-native to build reliable applications. The book is a development guide that will teach you how to build Java-native applications using Quarkus and GraalVM. We start by learning about the basic concepts of a cloud-native application and its advantages over standard enterprise applications. Then we will quickly move on to application development, by installing the tooling required to build our first application on Quarkus. Next, we’ll learn how to create a container-native image of our application and execute it in a Platform-as-a-Service environment such as Minishift. Later, we will build a complete real-world application that will use REST and the Contexts and Dependency injection stack with a web frontend. We will also learn how to add database persistence to our application using PostgreSQL. We will learn how to work with various APIs available to Quarkus such as Camel, Eclipse MicroProfile, and Spring DI. Towards the end, we will learn advanced development techniques such as securing applications, application configuration, and working with non-blocking programming models using Vert.x. By the end of this book, you will be proficient with all the components of Quarkus and develop-blazing fast applications leveraging modern technology infrastructure. What you will learnBuild a native application using Quarkus and GraalVMSecure your applications using Elytron and the MicroProfile JWT extensionManage data persistence with Quarkus using PostgreSQLUse a non-blocking programming model with QuarkusLearn how to get Camel and Infinispan working in native modeDeploy an application in a Kubernetes-native environment using MinishiftDiscover Reactive Programming with Vert.xWho this book is for The book is for Java developers and software architects who are interested in learning a promising microservice architecture for building reliable and robust applications. Knowledge of Java, Spring Framework, and REST APIs is assumed.

Quarkus In Action

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Author : Martin Štefanko
language : en
Publisher: Simon and Schuster
Release Date : 2025-02-25

Quarkus In Action written by Martin Štefanko and has been published by Simon and Schuster this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-02-25 with Computers categories.

Build resilient and scalable, cloud-native enterprise Java applications using the Quarkus framework. Quarkus lets you live-reload your Java code, deliver continuous background testing, and automatically provide database instances—plus tons more productivity-boosting features! Quarkus in Action quickly gets you up to speed with Quarkus by building a real-world business application. In Quarkus in Action, you will: • Use Quarkus Dev mode to speed up and enhance Java development • Understand how to use the Dev UI to observe and troubleshoot running applications • Automatic background testing using the Continuous Testing feature • New frameworks and libraries such as Quarkus Messaging, gRPC, and GraphQL • Simplify deployment of applications into Kubernetes and OpenShift • Automatic management of remote services such as databases and message brokers via Docker containers • Set up observability for applications by using metrics, health checks and distributed tracing Quarkus in Action is written by Martin Štefanko and Jan Martiška, Red Hat engineers who are both active contributors to the Quarkus project. In it, you’ll learn how Quarkus works and how you can integrate it into your stack for more productive Java development. Discover what makes Quarkus different from classic enterprise Java frameworks, how Quarkus streamlines creating cloud-native applications, and makes deployment easy. Foreword by Markus Eisele. About the technology Choose a Java framework that’s as modern as your applications! Quarkus is a cloud-first framework designed for speed and cost optimization. It’s Kubernetes-aware by default and includes amazing productivity features like live reloading, continuous testing, and a developer-friendly UI that lets you code fluidly without tedious setup. About the book Quarkus in Action provides a carefully designed learning path through Quarkus’ key features and use cases. You’ll learn hands-on by implementing a working car rental application with a cloud-native microservices design that includes Kubernetes, SQL and NoSQL databases, messaging, and observability. Along the way, you’ll learn how Quarkus simplifies deployment on cloud platforms like OpenShift. What's inside • Speed up development with Quarkus Dev mode • Troubleshoot running apps with Dev UI • Continuous testing in the background • Automatic startup of development databases About the reader For intermediate Java developers who have experience deve- loping server-side Java applications. About the author Martin Štefanko and Jan Martiška are Red Hat engineers and active contributors to the Quarkus project. Table of Contents Part 1 1 What is Quarkus? 2 Your first Quarkus application 3 Enhancing developer productivity with Quarkus Part 2 4 Handling communications 5 Testing Quarkus applications 6 Exposing and securing web applications 7 Database access 8 Reactive programming 9 Quarkus messaging Part 3 10 Cloud-native application patterns 11 Quarkus applications in the cloud 12 Custom Quarkus extensions A Alternative languages and build tooling B Tools installations C Alternatives for developing frontend applications with Quarkus

Full Stack Quarkus And React

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Author : Marc Nuri San Felix
language : en
Publisher: Packt Publishing
Release Date : 2022-11-30

Full Stack Quarkus And React written by Marc Nuri San Felix and has been published by Packt Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-30 with Computers categories.

Create and deploy standalone, fully functional, web applications using Quarkus and React Key Features: Get up and running with web application development speedily using React and Quarkus Get an overview of how to make a Java backend work seamlessly with a JavaScript frontend Learn how to deploy your working application to Kubernetes and share it with the world Book Description: React has established itself as one of the most popular and widely adopted frameworks thanks to its simple yet scalable app development abilities. Quarkus comes across as a fantastic alternative for backend development by boosting developer productivity with features such as pre-built integrations, application services, and more that bring a new, revolutionary developer experience to Java. To make the best use of both, this hands-on guide will help you get started with Quarkus and React to create and deploy an end-to-end web application. This book is divided into three parts. In the first part, you'll begin with an introduction to Quarkus and its features, learning how to bootstrap a Quarkus project from the ground up to create a tested and secure HTTP server for your backend. The second part focuses on the frontend, showing you how to create a React project from scratch to build the application's user interface and integrate it with the Quarkus backend. The last part guides you through creating cluster configuration manifests and deploying them to Kubernetes as well as other alternatives, such as Fly.io. By the end of this full stack development book, you'll be confident in your skills to combine the robustness of both frameworks to create and deploy standalone, fully functional web applications. What You Will Learn: Create a Quarkus project from scratch to gain a basic understanding of its advantages Create a persistence layer in a Quarkus application Secure your application by adding authentication and authorization features Use Quarkus Dev services to implement integration tests with real-world databases Start creating a React project from scratch Use React Testing Library to test React components Identify the most suitable alternatives for deploying your application to the cloud Who this book is for: This book is for backend web developers who have at least basic experience with Java and would like to learn React to build full stack apps by integrating it with a Quarkus-based backend. Frontend web developers with basic JavaScript experience will also find this book useful to learn how to implement a backend in Quarkus and integrate it with their frontend to create full stack web applications. Beginner-level knowledge of Java and JavaScript is recommended, but any developer experienced either with Java or JavaScript should be able to follow the backend and frontend parts easily.