This project demonstrates the startup speed and memory efficiency of running Spring Boot applications as GraalVM native executables. Tested on macOS Catalina (10.15.5).
Prerequisites:
- Java 11 (11.0.7)
- GraalVM CE 20.1.0
- GraalVM Native Image 20.1.0
To easily manage multiple Java and GraalVM installations, install prerequisites using SDKMAN! or with Homebrew and jEnv.
Run the shell script to compile the native executable:
./compile-native-executable.sh books nl.robinlaugs.books.Main 0.0.1-SNAPSHOT
Run the native executable:
./target/native-executable/books
To compare the startup speed and memory usage, you can also run the traditional JAR that is a side product of the shell script:
java -jar ./target/books-0.0.1-SNAPSHOT.jar --server.port=8081
Build and package the Docker image with the native executable:
docker build . --tag=books-native -f Dockerfile_native
Run the Docker image with the native executable:
docker run --name books-native -p 8080:8080 books-native
To compare the startup speed and memory usage, a traditional Dockerfile for running the application is a JAR is added.
Build and package the Docker image with the traditional JAR:
docker build . --tag=books-traditional -f Dockerfile_traditional
Run the Docker image with the native executable:
docker run --name books-traditional -p 8081:8081 books-traditional
(uses different server port, so can be used at the same time)
Use docker stats command to compare memory usage.