MapBoost
by mccmcaozr
MapBoost throttles how often each map item refreshes on the server, slowing updates for stationary players and speeding them up when players move.
What it does
MapBoost changes the update interval of each map independently, using a scheduler that keeps a separate timer per map. Each interval is adjusted by the position of the player carrying the map, so maps held by players who are standing still are refreshed less often than maps held by players who are moving. Expired maps and maps belonging to players who disconnect are cleaned up so the scheduler does not keep stale timers.
The mod targets the vanilla MapState update routine and gives each map a globally unique identifier, which the other parts of the mod use to find it. Sodium, Lithium, Iris, Xaero's Minimap and Xaero's World Map are not required, and the mod does not change their behavior. MapBoost is a server required mod, so the server must run it, while clients may leave it out. Files are published for Fabric, Forge and NeoForge, with builds for 1.21 – 26.2 covering 16 release versions.
Key features
Per-map update intervals
Each map keeps its own refresh timer, so one busy map does not delay the others on the server.
Position-aware throttling
The refresh rate of a map rises while its carrier moves and drops while the carrier stays in one place.
Expired map cleanup
Timers for expired maps are removed from the scheduler, so memory does not grow with the number of maps created.
Disconnect cleanup
When a player leaves the server, the timers tied to that player are cleared.
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners who run many players with map items and want fewer map refreshes on the server side. Only the server needs MapBoost, so players join without installing it.
How it compares
XaeroNuhUh is server-side only, open source under the MIT License and published for 1.21.1 – 26.2, so it covers the same server environment but is a different tool. Xaeros playerposition is client and server, not open source, and covers 1.16.5 – 26.3 on Fabric, Forge and NeoForge, so both sides need it. MapBoost stays server required and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MapBoost | Fabric, Forge and NeoForge | 1.21 – 26.2 | Server required, client optional | 2026-07-14 |
| XaeroNuhUh | Fabric and NeoForge | 1.21.1 – 26.2 | Server-side only | 2026-08-10 |
| Xaeros playerposition | Fabric, Forge and NeoForge | 1.16.5 – 26.3 | Client and server | 2026-09-16 |
Questions
Which loaders does MapBoost support?
Under what license is MapBoost released?
In the catalog
MapBoost is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 13,894 mods support Minecraft 26.2.
More from mccmcaozr
Similar mods
What the author says
MapBoost applies dynamic throttling to MapState.update (Mojang: MapItemSavedData.tickCarriedBy): refreshes more frequently when the player is moving, and reduces frequency when stationary.
Official listing
- Modrinth page
- modrinth.com/mod/mapboost-mccmcaozr
- Owner
- mccmcaozr
- Published
- 2026-07-14
- Updated on Modrinth
- 2026-07-14
- Facts verified
- 2026-10-15