ChunkFreezer

Stop crash machines before they stop your server.

ChunkFreezer watches every chunk in real time and freezes the ones that go out of control: entity farms gone wrong, runaway redstone clocks, lag machines and deliberate crash contraptions. Once the chunk calms down, it is unfrozen automatically. No restarts, no rollbacks, no manual cleanup.

Your players keep playing while the problem stays contained in a single chunk.

Why ChunkFreezer?

Lag machines and crash exploits don't need many players or much time to bring a server down. Fixing them by hand means digging through chunks while TPS keeps falling. ChunkFreezer reacts the moment a limit is crossed and releases the chunk as soon as it is safe again.

• Protects against crash machines, entity overloads and redstone abuse
• Only the problem chunk is affected, the rest of the world is untouched
• Fully automatic: freeze, notify, recover
• Safe for accidental overloads too (big mob farms, careless builds)

Features

Feature	Description
Real-Time Chunk Monitoring	Scans every chunk for excessive entities and redstone activity.
Dynamic Freezing	Overloaded chunks are temporarily disabled to prevent lag spikes and crashes.
Automatic Recovery	When entity and redstone counts return to safe levels, the chunk is restored on its own.
Customizable Thresholds	Set your own limits for entities, redstone devices and other parameters.
Admin Alerts	Get notified whenever a chunk is frozen or unfrozen.
Lightweight	Optimized to add minimal overhead to your server.
Simple Configuration	Everything is set up in an easy, readable config file.
Folia Support	All API methods are safe to call from any thread.

Video

Watch the showcase

Developer API

ChunkFreezer has a small API so your own plugins can react to frozen chunks. All methods are safe to call from any thread on Folia, with no need to hop to a specific region first.

Skip a farm payout while its chunk is frozen

ChunkFreezerAPI api = ChunkFreezerAPI.get();
if (api != null && api.isChunkFrozen(collector.getLocation())) {
    return;
}

Warn a player who's about to walk into a frozen chunk

@EventHandler
public void onMove(PlayerMoveEvent e) {
    ChunkFreezerAPI api = ChunkFreezerAPI.get();
    if (api != null && api.isNearFrozenChunk(e.getTo(), 1)) {
        e.getPlayer().sendActionBar(Component.text("A frozen chunk is nearby!"));
    }
}

List every frozen chunk

ChunkFreezerAPI api = ChunkFreezerAPI.get();
if (api == null) return;
for (FrozenChunkManager.FrozenInfo info : api.getFrozenChunks()) {
    World world = Bukkit.getWorld(info.worldId());
    if (world == null) continue;
    getLogger().info(world.getName() + " " + info.cx() + "," + info.cz() + " cause=" + info.cause());
}

Support & Feedback

Found a bug or have an idea? Open an issue on GitHub and help make ChunkFreezer better.