README.md

About

This is an example of dockerized GraalVM native image build. Produced image is inherited from scratch, thus a few MB in size.

Project includes a Spark server with of couple of web resources:

1. GET /exception - logs an exception
2. GET /ping - returns "hi" message
3. GET /person/1 - returns a simple dto
4. POST /person - logs provided dto

Example:

curl --header --request POST --data {"name":"Joe"} http://localhost:8080/person

How to Run

If you are on windows, execute:

run.cmd

Docker image/container names: graalvm-native

Notes

Image size is under 20Mb.

Memory

docker stats

MEM USAGE/LIMIT: 1.605MiB / 4MiB

Links

GraalVM

• https://www.graalvm.org/docs/why-graal/

Ahead-of-Time Compilation

• http://openjdk.java.net/jeps/295
• https://stackoverflow.com/questions/46579565/is-ahead-of-time-compilation-available-in-java-9

Substrate VM

• https://github.com/oracle/graal/blob/master/substratevm/README.md

Limitations

• https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md
• https://github.com/oracle/graal/blob/master/substratevm/REFLECTION.md

Benchmarks

• https://medium.com/graalvm/instant-netty-startup-using-graalvm-native-image-generation-ed6f14ff7692

Gradle Palantir GraalVM Plugin

• https://github.com/palantir/gradle-graal

Alternative Examples

• https://zeringue.io/post/graalvm-gradle-docker/
• https://guides.micronaut.io/micronaut-creating-first-graal-app/guide/index.html