Thomas Vitale

It’s ready to leverage cloud environment features and integrates with Kubernetes natively. In this session, Thomas will cover common patterns and best practices to build cloud-native applications with Java using the reactive programming paradigm in Spring Framework 6, which provides better performance, resilience, and efficiency. You’ll then see how to containerize them with Cloud Native Buildpacks, configure them through the natively supported ConfigMaps and Secrets, and deploy them to a Kubernetes cluster with Knative. Finally, he’ll show how to use the new capabilities in Spring Boot 3 to build native executables on GraalVM and achieve applications with almost instant startup time and reduced memory consumption, perfect for serverless architectures.

The number of technologies and patterns to know can be overwhelming. This session presents an approach based on open-source technologies and focused on improving the inner development loop and continuous delivery on Kubernetes. The end goal is to deliver value continuously, quickly, and reliably. First, I’ll present several techniques for working locally effectively and productively. Should you run Kubernetes in your development environment? I’ll cover a few different options. Using Java and Spring Boot, we’ll build a cloud-native application following the principles of test-driven development. The inner development loop will be enhanced with Cloud Native Buildpacks, Tilt, Knative, and Telepresence. Continuous integration is a crucial practice for continuous delivery. We’ll check in code regularly, triggering an automated process to build, test, and package the application. Do you use pull requests? Relying on ArgoCD and the GitOps principles, I’ll show you how to work with temporary environments created dynamically when a new pull request is opened. Finally, we'll use Cartographer to glue together all these different tools and design a golden path to production on Kubernetes, providing a clear separation of concerns and letting developers focus on delivering value.