Chunk Cache
by Habrotron
Chunk Cache lets a player keep chunks of a world on disk, so areas the server no longer sends can still be viewed from the client.
What it does
Chunks that a client receives from a server are saved locally. The cache is written to the single-player world folder under the name the player selected, so later sessions can reuse what was already received. A map view shows which chunks are currently cached, and a toggleable menu opened with the F9 key controls the feature.
When the player switches to another server, the mod clears its cache automatically, so chunk data from one server is not mixed with another. Because it only stores what the client has already received, it does not read or access the server's world files. The mod is published for Fabric only, for 1.21.11, and runs on the client alone. Its license is the MIT License, and the code is not open source in the sense of a public repository listed here.
Key features
Chunk storage
Chunks received from the server are kept locally, so previously loaded areas remain available.
F9 menu
Pressing F9 opens a menu for managing the cache, and the menu can be toggled on and off.
Cache map
A map displays which chunks are currently held in the cache.
Automatic clearing
The cache is cleared when the player switches servers, keeping data from different servers apart.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Revisiting explored areas
A player can look over parts of a single-player world that were already loaded without reloading them.
Who it’s for: Players who want to keep chunk data from earlier visits and view which parts of a world are cached.
How it compares
BB Preload World is a Fabric mod for 1.21 – 1.21.1, running on client and server, under the MIT License and open source. Litematica Bobby Fix is client-side only, released under the MIT License for 1.21.8 and not open source. Season Cache is open source under the MIT License, runs on client and server, and covers 1.21 – 1.21.11, which includes this mod's version.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chunk Cache | Fabric | 1.21.11 | Client-side only | 2026-06-08 |
| BB Preload World | Fabric | 1.21 – 1.21.1 | Client and server | 2024-11-25 |
| Litematica Bobby Fix | Fabric | 1.21.8 | Client-side only | 2026-02-22 |
| Season Cache | Fabric | 1.21 – 1.21.11 | Client and server | 2026-04-26 |
Questions
Does Chunk Cache need any other mod?
Does Chunk Cache have to be installed on the server?
Where is the cached data stored?
What happens when the player changes servers?
In the catalog
Chunk Cache is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Habrotron
Similar mods
What the author says
Features: - Press F9 to open GUI menu - Toggleable in menu - Automatically clears cache when switching servers - Map to see what's been cached - Saves to a single player world with name selected
Official listing
- Modrinth page
- modrinth.com/mod/chunk-cache
- Owner
- Habrotron
- Published
- 2026-06-08
- Updated on Modrinth
- 2026-06-08
- Facts verified
- 2026-10-15