Nexus Engine - Version 1.4.2

🚀 Nexus Engine - Version 1.4.2

This release brings significant stability improvements, memory leak fixes, thread-safety enhancements, and clean refactoring across both core core application logic and data addon management.

📋 What's Changed

⚙️ Core & Lifecycle Enhancements (NexusApplication)

• Thread Safety: Marked the singleton NexusApplication instance as volatile to prevent stale references in highly concurrent multi-threaded environments.
• Memory & Resource Fixes: Wrapped URLClassLoader within a try-with-resources block to ensure file handles and memory resources are immediately freed after loading JARs.
• Database & Threading: Resolved a parallel connection race condition on MongoDB by adding a 10-second initial delay to the scheduled task. Also standardized initial database verification tasks on the Swing thread.
• Safety First: getInfluxDBManager() now returns an Optional<InfluxDBManager>, explicitly enforcing downstream NPE checks when metrics are disabled.

📊 Data & Metrics Refactoring (DataAddon)

• Critical Bug Fix: Fixed a telemetry bug in handleIncrementData where the old JSON payload was being pushed instead of the newly updated one.
• Performance Optimization: Reduced repetitive getApplication() and getRedisManager() lookups by caching them into local variables.
• Early Validation: Added input validation before spawning Redis tasks to eliminate redundant asynchronous operations.
• Code Cleanups: Modernized Optional handling via .ifPresent(...), simplified metric annotation lookups, and pruned unused imports.

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