Async Locator
by bright_spark
Async Locator moves the search for structures and other features onto a separate thread, so a server running locate commands or villager and chest map trades lags less while the search runs.
What it does
Without this mod, vanilla searches for generated features run on the main game thread and can stall the server tick while they finish. Async Locator changes that search to run asynchronously, and it covers the locate command when a user runs it, explorer map offers from villagers, buried treasure found with dolphins, and exploration maps placed in chests.
Server owners install it, and players connect with no copy of their own. A player on a single-player world can add it for the same effect. The mod does not change anything by itself for other mods; they must call its asynchronous search themselves to benefit. One other mod is named by the author as using the same improvement, and only one of the two mods' locating improvements takes effect at startup, so only one of them is required.
Async Locator needs Fabric API and is published for Fabric and Forge. Builds cover 1.18.2 – 1.20.2 across seven release versions, and the latest Fabric file is 1.19.4-1.3.1 for 1.19.4, while the latest Forge file is 1.20-1.3.0 for 1.20.2. The code is open source under the MIT License.
Key features
Asynchronous locate command
The command that finds the nearest structure or biome runs its search off the main thread.
Villager map trades
Explorer map offers from villagers are located asynchronously, reducing stalls when a trade is made.
Dolphin treasure search
Finding buried treasure with dolphins uses the asynchronous search instead of blocking the tick.
Chest exploration maps
Exploration maps found in chests are located asynchronously once they are generated in a world.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Required by 2 mods
Use cases
Busy multiplayer servers
Server owners who see lag spikes during locate commands or map trades can run the mod on the server to move those searches off the main thread.
Who it’s for: Server owners running vanilla worlds who want lighter lag from feature searches. Single-player players may also install it, but the mod works on the server side.
How it compares
MC-249136 Fix is server-side only and open source under the GNU Lesser General Public License v3.0 only, with files for 1.19 – 1.20.4 on Fabric and Quilt. Maps of the Unknown is also server-side only and open source under the MIT License, with files for 1.18.2 – 26.3 on Fabric and Quilt. Async Logger is client-side only and open source under the GNU Lesser General Public License v3.0 only, with loaders Fabric, Forge, NeoForge, Quilt and Ornithe. Async Locator targets Fabric and Forge with versions 1.18.2 – 1.20.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Async Locator | Fabric and Forge | 1.18.2 – 1.20.2 | Server-side only | 2023-06-24 |
| MC-249136 Fix | Fabric and Quilt | 1.19 – 1.20.4 | Server-side only | 2023-12-09 |
| Maps of the Unknown | Fabric and Quilt | 1.18.2 – 26.3 | Server-side only | 2026-09-23 |
| Async Logger | Fabric, Forge, NeoForge, Quilt and Ornithe | 1.0 – 26.3 | Client-side only | 2026-10-14 |
Questions
Does Async Locator need Fabric API?
Do players need Async Locator installed?
Why might two locating mods conflict?
In the catalog
Async Locator is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 12,076 mods support Minecraft 1.20.2.
Similar mods
What the author says
Modifies vanilla behaviour when locating features to run asynchronously, mitigating associated lag. This is currently implemented for: Locate command when executed by a user Villager explorer map trade offers Dolphin treasure finding Exploration map in chests (v1.1.0+)
Official listing
- Modrinth page
- modrinth.com/mod/async-locator
- Owner
- bright_spark
- Published
- 2022-12-23
- Updated on Modrinth
- 2023-06-24
- Facts verified
- 2026-10-15