Fast Async Backups

Minecraft 版本： 1.21.1 1.21.2 1.21.3 1.21.4 1.21.5 1.21.6 1.21.7 1.21.8 1.21.9 1.21.10 1.21.11

平台： neoforge

标签： management utility

World Backup

Simple, reliable world backups at the press of a key — or the tip of a command.

Ever had your world corrupted by a rogue mod, a power outage, or just a bad decision with WorldEdit? World Backup lets you create instant, compressed zip backups of your entire world folder with a single command. Backups run asynchronously so your server never freezes, and automatic rotation keeps your disk from filling up.

✨ Features

• Instant backups — Create a full .zip backup of your world with /backup <name>
• Non-blocking — Backups run on a separate thread; your server stays responsive
• Automatic rotation — Old backups are pruned automatically based on a configurable limit
• Configurable — Set your backup limit via command or JSON config file
• Safe by default — Name validation prevents path traversal attacks
• Conflict-friendly — Copies your world to a temp directory first, then zips from the clean copy. Files locked by other mods (Sable, etc.) are retried automatically with increasing backoff.
• Server-wide broadcast — All players see backup progress and completion messages

? Commands

Examples:

/backup before-portal          →  before-portal_2025-06-03_21-30-00.zip
/backup vanilla-test           →  vanilla-test_2025-06-03_21-31-15.zip
/backuplimit 25                →  Sets the rotation limit to 25 backups

All players can use these commands by default — no operator permissions required.

⚙️ Configuration

The backup limit is stored in backup/backup_config.json inside your server directory. It is created automatically on first use and can be edited directly:

{
  "backupLimit": 10
}

The limit can also be changed in-game with /backuplimit <number>.

? Where are backups stored?

Backups are saved to the backup/ folder inside your server directory (next to your world folders). Each backup is a compressed .zip file named in the format:

<name>_<YYYY-MM-DD_HH-mm-ss>.zip

? Compatibility

World Backup is designed to coexist peacefully with other mods:

• Sable — Fully compatible. World files are copied to a temporary directory before zipping, so Sable's file locks don't interfere. Retried up to 5 times with increasing backoff.
• Ice and Fire, Dread Land, and other dimension mods — All sub-levels and custom dimensions are backed up.
• Any file-locking mod — The copy-first strategy combined with retry logic handles files locked by other mods without skipping data.
• Any world type — Works with vanilla, modded, and custom world formats.

? Technical Details

• Copy-first strategy — World folder is copied to a temp directory using Files.copy (path-to-path), which on Windows uses the CopyFileEx API to handle locked files
• Backups flush all chunks to disk before copying (saveAllChunks)
• Asynchronous execution via CompletableFuture — no server tick lag
• Automatic retry with backoff (up to 5 attempts) for temporarily locked files
• Temp directory is cleaned up automatically after backup completes (even on failure)
• Backup rotation deletes the oldest files first by modification time
• Safe filename validation: only letters, numbers, hyphens, and underscores allowed

? Installation

1. Install NeoForge for Minecraft 1.21.1+
2. Drop worldbackup-1.0.0.jar into your mods/ folder
3. Start the server — backups are ready to go

No configuration needed to get started. Just /backup my-backup and you're set.