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)