Modernizing Enterprise Java - A Concise Cloud Native Guide for Developers (true pdf)

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 ----------------------------- Markus is a Java Champion, former Java EE Expert Group member, founder of JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world. With more than 16 years of professional experience in the industry, he designed and developed large Enterprise grade applications for Fortune 500 companies. As an experienced team lead and architect, he helped implement some of the largest integration projects in automotive, finance and insurance companies. More than 12 years of international speaking experience and 5 years in developer advocacy with a strong focus on Java platforms helped him build a large network of professionals and influencers. He is an O'Reilly author and helped with technical reviews of more than 10 books about technologies he cares for. He published more than 100 articles in various IT publications over the last 10 years. Natale is a Software Engineer with more than 10 years of expertise on IT and ICT technologies and a consolidated background on Telecommunications and Linux operating systems. As a Solution Architect with a Java development background, he spent some years as EMEA Specialist Solution Architect for OpenShift at Red Hat. Today Natale is Developer Advocate for OpenShift at Red Hat, helping people within communities and customers having success with their Kubernetes and Cloud Native strategy. Copyright Table of Contents From Platform to Ecosystem Preface Conventions Used in This Book Using Code Examples O’Reilly Online Learning How to Contact Us Acknowledgments Chapter 1. Revisiting Enterprise Development From Public to Private. Why Clouds? What “Cloud Native” Means Kubernetes-Native Development Containers and Orchestration for Developers Container-Native Runtime Kubernetes Flavors Managing Development Complexity DevOps and Agility Summary Chapter 2. The Path to Cloud Native Java Cloud Native Workshop Architecture Create an Inventory Microservice with Quarkus Create Quarkus Maven Project Create a Domain Model Create a RESTful Service Run the App in Dev Mode Create a Catalog Microservice with Spring Boot Create a Maven Project Create a Domain Model Create a Data Repository Create a RESTful Service Create a Gateway Service with Vert.x Create a Vert.x Maven Project Create an API Gateway Create a Frontend with Node.js and AngularJS Run the Frontend Summary Chapter 3. Travel Light on Your Pathway Three-Tier or Distributed System Technology Updates, Modernization, and Transformation The 6 Rs Divide and Containerize Kubernetes as the New Application Server? Define Your Target Platform Mandatory Migration Steps and Tools Create an Application Portfolio Prepare for Big Things Summary Chapter 4. A Kubernetes-Based Software Development Platform Developers and Kubernetes What Kubernetes Does What Kubernetes Doesn’t Do Infrastructure as a Code Container Images Dockerfile Building Container Images Run Containers Registry Deploying to Kubernetes Pod Service Deployment Kubernetes and Java Jib JKube Summary Chapter 5. Beyond Lift and Shift: Working with Legacy Managing Legacy Assessing Applications for Migration Assessing Functionality for Migration Migration Approaches Protecting Legacy (Replatform) Build Something New (Refactor) Challenges Avoiding Dual-Writes Long-Running Transactions Removing Old Code Too Quickly Integration Aspects Summary Chapter 6. Building Kubernetes-Native Applications Find the Right Balance Between Scalability and Complexity Functional Requirements for Modern Architectures API-Driven Discovery Security and Authorization Monitoring Tracing Logging CI/CD Debugging Microservices Port Forwarding Quarkus Remote Development Mode Telepresence Summary Chapter 7. Tomorrow’s Solutions: Serverless What Is Serverless? Architectural Evolution Use Cases: Data, AI, and Machine Learning Use Cases: Edge Computing and IoT Knative: Serverless for Kubernetes Event-Driven Serverless Architectures Function as a Service for Java Applications Functions Deployment for Java Applications Boson Function CLI (func) Summary Index About the Authors Colophon This practical book helps developers examine these long established models and demonstrates how to bring monolithic applications successfully into the future. Relying on their years of modernization experience, authors Markus Eisele and Natale Vinto walk you through the steps necessary to update your application.