Async Locator Refined
by alvaro842
Async Locator Refined moves the search for villages, biomes, ocean monuments and other structures off the main server thread, so the lag a locate command causes is reduced.
What it does
The mod changes how vanilla finds structures and biomes: the search runs asynchronously, which mitigates the lag these searches can cause on a busy server. It covers the locate structure and locate biome commands run by a user, plus the map trades offered by villager explorers, treasure found by dolphins, and exploration map chests. Structure Essentials and other mods that touch vanilla's locating features can alter how the mod behaves, so the author lists the ones known to be compatible.
The mod is server-side only: the server needs it installed, and players who join a server that runs it need nothing extra. Players who want to use it in single-player must install it on their own client. It is maintained and open source under the MIT License, with Fabric and NeoForge files for the 1.21 line. Other mods that want the asynchronous search have to implement its use themselves, because the mod changes only the vanilla behavior listed above.
Key features
Asynchronous structure search
Vanilla structure and biome searches run on a separate thread, so the main thread is not held while a locate command runs.
Locate commands
The locate structure and locate biome commands return their results through the asynchronous search.
Map and treasure lookups
Villager explorer map trades, dolphin treasure finding and exploration map chests use the same faster search.
Maintained builds
The project is still maintained, with a recent update on 2026-08-31 for 1.21.8.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Astruct runs server-side only, is open source under the MIT License, and has a NeoForge file for 1.21.1, while Async Locator Refined has Fabric and NeoForge files across the 1.21 line. CleanJoin is also server-side only but is not open source, is released under All rights reserved, and covers its range on NeoForge alone. Thread Weave is open source under the MIT License and runs on the client and server together, with NeoForge files for 1.21 – 1.21.11, so its environment is not the same as this mod's.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Async Locator Refined | Fabric and NeoForge | 1.21.1 – 1.21.11 | Server-side only | 2026-08-31 |
| Astruct | NeoForge | 1.21.1 | Server-side only | 2026-01-11 |
| CleanJoin | NeoForge | 1.21.1 – 1.21.11 | Server-side only | 2026-07-22 |
| Thread Weave | NeoForge | 1.21 – 1.21.11 | Client and server | 2026-07-13 |
Questions
Does the server need Async Locator Refined installed?
Which loaders does Async Locator Refined support?
Do other mods use the asynchronous search automatically?
In the catalog
Async Locator Refined is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
I have obtained the creator’s permission to port it. Modifies vanilla behaviour when locating features to run asynchronously, mitigating associated lag.
Official listing
- Modrinth page
- modrinth.com/mod/async-locator-refined
- Owner
- alvaro842
- Published
- 2025-04-04
- Updated on Modrinth
- 2026-08-31
- Facts verified
- 2026-10-15