CurseForge · Minecraft mod
Rhenium
This is a memory optimization mod
Quick answer
Which Rhenium release should I use?
rhenium-1.1.0+fabric.jar targets 1.21, 1.20.2, 1.21.8 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Rhenium required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does rhenium-1.1.0+fabric.jar need?
rhenium-1.1.0+fabric.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Rhenium without breaking your instance.
Built for rhenium-1.1.0+fabric.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use rhenium-1.1.0+fabric.jar. It targets 1.21, 1.20.2, 1.21.8 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside rhenium-1.1.0+fabric.jar. It opens that exact file at the source.
About this project
What does Rhenium add?
Introduction
This is a memory optimization mod. It limits the structure template cache by memory usage, automatically reclaims templates that haven't been used for a long time, reduces unnecessary memory usage during normal gameplay, and lowers the pressure of long-term operation.
Effects
When the cache exceeds its budget, the least recently used templates are evicted first, while recently used ones are kept. Tested in adventure modpacks with many structures, it saved about 20% of memory. This optimization does not break structure integrity or structure generation, so it's safe to add.
Note: The 1.0.0 implementation was too aggressive and slowed down structure loading. 1.1.0 has been refactored with almost no change to the optimization effect, so please update promptly!
Project description from CurseForge.
Pick your setup
Rhenium by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader builds1.21.3
2 loader builds1.21.2
2 loader builds1.21.1
2 loader builds1.21
2 loader buildsShowing the newest 12 of 24 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Rhenium versions and loaders
rhenium-1.1.0+fabric.jar
2 Oct 2026
rhenium-1.1.0+neo.jar
2 Oct 2026
rhenium-1.1.0+forge.jar
2 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.
