System Requirements

The software and hardware environment needed to run a Youer server

Java

Youer needs Java JDK to run; different versions require different Java versions:

Youer versionMinimum Java versionRecommended
1.21.1JDK-21JDK-21 (LTS)
26.2+JDK-25JDK-25
We recommend installing Eclipse Temurin (formerly AdoptOpenJDK), the most widely used JDK distribution in the Youer community.

Operating System

Youer supports the following operating systems:

  • Linux (recommended) — mainstream distros such as Ubuntu / Debian / CentOS / Arch Linux
  • Windows — Windows 10 / 11 / Server
  • macOS — both Intel and Apple Silicon

There are no special OS restrictions; any system that can run the corresponding Java version works.

Memory (RAM)

Minecraft servers need a certain amount of memory, depending on your player count and number of mods/plugins:

ScenarioRecommended memory
Small server (1-10 players, few plugins)2-4 GB
Medium server (10-50 players, more mods/plugins)4-8 GB
Large server (50+ players, large modpack)8-16 GB

Rough estimate: on average 1GB of RAM supports about 5-10 players (vanilla / few plugins); modded servers will support fewer.

Set it via -Xmx and -Xms in the startup arguments, e.g. -Xms2G -Xmx4G means 2GB initial and 4GB maximum. It's generally recommended to set both to the same value to avoid runtime heap resizing.

No matter how well you tune the JVM arguments, they can't make up for a weak CPU generation gap or poorly-made mods/plugins. Instead of spending time tweaking parameters, spend the money on a better CPU and on tracking down the problematic mods.

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