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Hassium is a high-performance Minecraft optimization mod providing efficient storage, network optimization, chunk caching, beyond-view rendering, and lighting optimization. Covers Minecraft 1.20.1–1.21.11 on Fabric / Forge / NeoForge.
Repo: github.com/limuqy/Hassium · 简体中文
| Core capability | Description |
|---|---|
| Efficient storage | Compresses world chunks with ZSTD to reduce save size while retaining the vanilla .mca layout |
| Network optimization | Compresses chunk and network data to reduce bandwidth and loading waits |
| Chunk cache | Reuses locally loaded chunks to avoid repeated downloads |
| Beyond-view render | In multiplayer, fills terrain beyond server view distance from the local cache for rendering only |
| Lighting optimization | Recomputes lighting when needed and reuses cached lighting data to avoid repeated work |
Feature details: Features.
- Download the loader-specific JAR from GitHub Releases or CurseForge.
- Drop it into
mods/on client and/or server. - Launch the game; config files are generated under
config/hassium/. - Back up worlds before first enabling storage (see FAQ).
Details: Installation.
| Page | Content |
|---|---|
| Installation | Download, prerequisites, per-loader notes |
| Configuration | Full config table and GUI paths |
| Commands |
/hassium and /hassiumc reference |
| Features | Feature deep-dive |
| Beyond-View-Render | Beyond-view render details |
| World-Export | Cache world export |
| Compatibility | Multi-mod compatibility table |
| Support-Matrix | Version × loader matrix |
| Data-Plane-and-Failover | UDP data plane + control failover (server ops) |
| FAQ | Frequently asked questions |
| Troubleshooting | Debug paths and logs |
| Minecraft | Fabric | Forge | NeoForge |
|---|---|---|---|
| 1.20.1 | ✅ | ✅ | ✅ |
| 1.20.2–1.20.4 | ✅ | — | ✅ |
| 1.20.5–1.20.6 | ✅ | ✅ (1.20.6 only) | ✅ |
| 1.21.1–1.21.11 | ✅ | — | ✅ |
Full nine-segment table: Support-Matrix.