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 From Platform to Ecosystem Preface Conventions Used in This Book Using Code Examples O’Reilly Online Learning How to Contact Us Acknowledgments 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 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 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 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 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 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 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 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.
