native

GraalVM support with Spring Boot 3.0

This module describes how to create a GraalVM native image out of your Spring Boot based Java app.

How to run this app?

You don't need install GraalVM on your workstation: the native image will be built leveraging Cloud Native Buildpacks. A container-based process will take care of building your app as a native process with GraalVM and its dependencies.

That's why you need to install the pack CLI in order to use Buildpacks: follow these instructions.

Make sure you have a Docker daemon running.

Run this command to compile the app into a native process:

./mvnw -Pnative spring-boot:build-image

Wait a few minutes until the compilation is done... ☕

Run this command to start the app:

docker run --rm -p 8080:8080 ghcr.io/alexandreroman/wnisb3-native

Note how fast the app starts! 🚀

The app is available at http://localhost:8080.

Deploy this app to Kubernetes

Go to the k8s directory and follow instructions to start a local cluster on your workstation.

As soon as you have a Kubernetes cluster up and running, proceed to the next step.

From the k8s/wnisb3-native directory, run this command to deploy the app to your Kubernetes cluster:

make install

Run this command to uninstall the app from your cluster:

make uninstall