The tracking script that never blocks page load: a stub and queue pattern

📰 Dev.to · Zenovay

Learn how to build an analytics client that captures user interactions without blocking page load using a stub and queue pattern

intermediate Published 27 Jun 2026
Action Steps
  1. Implement a stub function to capture user interactions without blocking the main thread
  2. Use a queue data structure to store events temporarily
  3. Configure a Web Worker to process the queue and send events to the analytics server
  4. Test the implementation to ensure page load is not blocked
  5. Apply this pattern to other areas of the application where asynchronous data collection is necessary
Who Needs to Know This

Developers and engineers working on web applications can benefit from this approach to ensure seamless user experience while collecting valuable analytics data

Key Insight

💡 Using a stub and queue pattern allows for non-blocking analytics data collection

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🚀 Build an analytics client that doesn't block page load! 📊

Key Takeaways

Learn how to build an analytics client that captures user interactions without blocking page load using a stub and queue pattern

Full Article

How we built an analytics client that captures everything without ever blocking paint.
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