# JVMs in Containers: Best Practices - David Delabassee

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Container vs VM

JVM Container Tooling

JVM should behave as a good (Container) citizen.

Use jlink to create a custom Java Runtime which helps reduce the Docker image size.

Fn is a lightweight Docker-based serverless functions platform. https://fnproject.io/

jlink with Alpine OS

Class Data Sharing helps reduce the startup time for Java.

GraalVM: high performance universal virtual machine, reduce image size

Use Java version as latest as possible.
Choose the base image wisely and secure it.

###### tags: `jcconf`