Folia

Folia is an experimental fork of the Paper Minecraft server software designed to improve scalability by introducing region-based multithreading. Traditional Minecraft servers run most game logic on a single main thread, which creates performance bottlenecks when many players are active simultaneously. Folia addresses this limitation by dividing the game world into independent regions composed of nearby chunks and assigning each region its own tick loop. These regions run concurrently on multiple threads within a thread pool, allowing server hardware with many CPU cores to process gameplay events in parallel. This architecture significantly increases scalability for large multiplayer environments where players are distributed across different areas of the world. Because the project fundamentally changes how the server processes game logic, many existing plugins are not immediately compatible and must be adapted for the new threading model.