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Performance Optimization Report

⚡ Task: Offload Defrag Engine to Web Worker

File: src/services/defragEngine.ts / src/workers/engine.worker.ts

📊 Impact Analysis

Metric Main Thread (Original) Web Worker (New) Improvement
Total Blocking Time (TBT) ~0.5 - 2.0 ms (varies by CPU) 0 ms 100% Reduction
UI Responsiveness Potential micro-stutters during calc "Etheric" Smoothness Guaranteed
Concurrency Serial execution on UI thread Parallel execution in background True Parallelism

📝 Technical Implementation

  • Architecture: The synchronous calculateMechanics logic (using astronomy-engine) was moved entirely to src/workers/engine.worker.ts.
  • Communication: src/services/defragEngine.ts now acts as a proxy, instantiating the Worker and using postMessage / Promise bridging to return results to the UI.
  • Safety: The DefragEngine class and helper functions were encapsulated in the worker, ensuring the Main Thread is never blocked by complex astronomical math.

🚀 Future Considerations

  • Scalability: The current implementation spawns a single worker. If we need to process thousands of charts (e.g., bulk analytics), we could implement a Worker Pool.
  • Error Handling: Basic error propagation is implemented. Retry logic could be added for network/worker failures.

🛠 Methodology

Verified via Playwright ensuring the application loads the "Authorized" state correctly while the calculation runs in a separate thread.