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README.md



Native Minecraft Servers with GraalVM Native Image



The Minecraft server is known to consume a lot of memory and CPU and is difficult to deploy. This project allows you to build the Minecraft server into an executable that is self-contained and independent with the help of GraalVM Native Image. As such, it should require less CPU and memory resources, have faster startup times, and be less expensive and easier to deploy.



A native Minecraft server is smaller than 120MB and, with that, significantly smaller than Minecraft's server.jar and a JDK required to run it. The native executable can be further compressed in order to reduce its size to less than 40MB. This is less than the server.jar. Initial tests also suggest competitive run-time performance with less memory footprint. Create using GraalVM Enterprise native image for best results. This provides higher performance and lower consumption of memory than the Community Edition. Also, test the G1 GC or Profile-Guided Optimizations. The Oracle Cloud Free Tier not only provides four Ampere A1 cores and 24 GB of RAM that is enough for hosting the Minecraft server and also provides access to GraalVM Enterprise.



For more details, read this blog post.



Disclaimer This project is designed to be used for demonstration purposes only. protonamail It is intended to help the Minecraft community evaluate the use of GraalVM Native Image. Use at your own risk.



1. Download GraalVM Community or Enterprise (GraalVM 22.2.0 or later is required). Optional: make sure upx is on your $PATH to enable compression. 2. Visit the repository and download it. Then, run build.sh. 3. Launch the native Minecraft server with ./native-minecraft-server. When you first run the server, you will be required to follow the normal procedure of accepting Minecraft's EULA.



How does it work



This project only contains the build.sh script and reachability metadata for building an native Minecraft server. The build.sh script first downloads Minecraft's server.jar and extracts jars and other resources from it. After that, it launches GraalVM Native Image using the right configuration to create an original version of the Minecraft server. In addition, and only if upx is on the $PATH the script will compress the native executable.



Limitations and Known Issues



The configuration currently allows Minecraft 1.18.2. The server GUI is not yet supported. - Mods are currently not supported. While there isn't yet a build script for Windows however, the WSL should be able to work. - The native executable sometimes fails upon starting. Restarting it a few times is usually enough to fix. Error: com.mojang.datafixers.types.templates.List$ListType cannot be cast to java.lang.Comparable.


Read More: https://protonamail.lol/