DN Backup

[0.3.1] - 2026-06-15

🚀 Added

• Backup on Shutdown: Added a configuration option backupOnShutdown (default true) to automatically back up the world when the server is stopping, gracefully waiting for completion before shutting down.
• Chat Announcements: Implemented chat announcements for backup start, success, and failure, controlled by the silent config option.
• Modern Text Formatting: Migrated all in-game messages from outdated § style codes to modern Minecraft ChatFormatting styling components to prevent message truncation.

⚙️ Changed & Optimized

• Smart Network Throttling: Throttled progress packet transmissions to client HUD to update only when the progress percentage changes, every 250ms, or upon file completion. This prevents networking queue flooding on servers.
• Performance Tuning: Increased zip compression buffer size from 8KB to 64KB, improving backup speed and CPU efficiency.
• Tick Optimization: Cached config checks inside the main scheduler loop to avoid calling config reads 20 times per second.
• Clean Mod Weight: Removed dead generator and empty mixin configurations to speed up mod loading times.

🐛 Fixed

• Shutdown Thread Hang Protection: Added a 5-minute safety timeout to the shutdown hook to ensure the server never hangs indefinitely if a thread error occurs during shutdown.
• Backup State Thread Safety: Configured isBackupRunning and scheduling variables to be thread-safe (volatile / synchronized locks) to avoid race conditions.
• Autosave Recovery: Fixed a bug where a failed backup initialization could leave the server with save-off (autosave disabled) forever.
• Thread-safe Configs: Synchronized configuration load, save, and reload routines to prevent partial reads or writing conflicts.
• Infinite Scheduled Backup Loop: Fixed a critical bug where auto-backups loop indefinitely if timerIntervalMinutes is set to 0 or negative.
• Garbage Temp Files: Fixed a bug where .tmp files are left behind on backup failure.
• File Lock Warnings: Excluded session.lock and other .lock/.lck files from backups to avoid noisy JVM file locking errors on Windows.