
Ununennium
Ununennium, a future optimisation, like the placeholder element.
About this Mod
Ununennium
Cache selectors in commands to let Minecraft go brr
Ununennium caches selectors (predicates) you can use when executing Minecraft brigadier commands.
The mod may greatly improve the performance of function datapacks that execute many commands in one tick because the selectors are cached and don't have to be evaluated a bajillion times in a tick.
FAQ
Q: Will anything break?
- A: It depends. In rare cases, caching may cause unexpected behavior if you rely on selector results changing within the same tick. For example:
This only affects commands run within the same tick. On the next tick, the cache refreshes and the command will work as expected.# This will now load it into the cache execute as @e[tag=nice_tag] run say hello # We'll add a tag here tag @p add nice_tag # We'll try to execute this here and it will just not do it because of the cache. # If it was executed next tick it would've worked because of the refreshed cache! execute as @e[tag=nice_tag] run say THIS WILL ONLY BE VISIBLE AT THE NEXT EXECUTION
- A: It depends. In rare cases, caching may cause unexpected behavior if you rely on selector results changing within the same tick. For example:
Q: Will this change my datapacks or world?
- A: No, the mod does not touch any files nor does it modify your datapacks/world.
Q: Datapack XY doesn't work, what to do?
- A: Please create an issue so it is easier to track and fix!
Contributing
Contributions, bug reports, and suggestions are welcome! Please open an issue or pull request on GitHub.
License
This project is licensed under the terms of the MIT License. See LICENSE for details.
Available Versions
How to Install Ununennium on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).
Install Mod
Open the mod browser in the dashboard and search for "Ununennium". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.8, 1.21.7, 1.21.6 (+1 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Ununennium server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.
Is Ununennium compatible with fabric and quilt?
Ununennium officially supports fabric, quilt for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Ununennium – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Ununennium consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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