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FastChunk

A high-performance chunk pre-generator that uses less CPU/RAM than alternative options on the market.

Features

Fully async loading — uses getChunkAtAsync, never blocks the main thread
Adaptive TPS throttling — monitors server TPS in real time and automatically scales speed up or down
Bounded concurrency — caps the number of chunks loading simultaneously to prevent RAM spikes
Spiral ordering — reduces disk I/O by walking chunks in region-file order
Auto-unload — frees RAM immediately after generation if no players are nearby

Commands

Command	Description
`/fastchunk start <world> <radius>`	Start pre-generation
`/fastchunk pause [world]`	Pause temporarily
`/fastchunk resume [world]`	Resume
`/fastchunk stop <world>`	Stop and clear the task
`/fastchunk status`	View progress

Permissions

fastchunk.use (default: op)

Supported Versions

1.19 – 1.20.x (see the Versions tab for each release)