WERM

[1.0.4] - 2026-01-02

⚡ Performance & Reliability Release

This release adds batch delivery confirmation and async file I/O to improve performance and reliability during high-load scenarios.

Added

Batch Delivery Confirmation (Improvement 1.3)

• New Batch API - Confirmations are now batched (up to 10 at a time) and sent in a single API call
• Backend Support - New batch-confirm-delivery endpoint processes multiple confirmations atomically
• Reduced API Overhead - Up to 90% reduction in confirmation API calls during bulk deliveries
• Graceful Fallback - Automatically falls back to individual confirmations if batch fails

Async File I/O (Improvement 1.4)

• Non-blocking File Writes - Confirmation queue saves now run on a dedicated background thread
• ExecutorService - Single-thread daemon executor prevents main thread blocking
• Debounced Saves - Multiple queue changes are coalesced into fewer disk writes
• Graceful Shutdown - Synchronous save on server stop ensures no data loss

Changed

• DeliveryConfirmationQueue.java - Complete rewrite with batch processing and async I/O
• VerificationAPI.java - Added batchConfirmDeliveries() method for batch API calls
• WERMPlugin.java - Updated onDisable() to properly shutdown confirmation queue

Technical Details

• Batch Size: 10 confirmations per API call
• I/O Thread: Daemon thread named WERM-ConfirmationQueue-IO
• Shutdown Timeout: 5 seconds for graceful termination
• New Classes:
  • BatchConfirmation - Data class for batch confirmation items
  • BatchConfirmResult - Result wrapper for batch API responses

Performance Impact

• ~90% reduction in confirmation API calls during bulk deliveries
• Zero main thread blocking from file I/O operations
• Faster server shutdown due to optimized queue persistence
• Lower disk I/O through debounced writes