Introducing Speed Brain: helping web pages load 45% faster
5 days ago
- #web-performance
- #speed-optimization
- #cloudflare
- Speed Brain is Cloudflare's new feature to reduce page load latency by prefetching content based on user interaction predictions.
- It uses the Speculation Rules API to prefetch likely next navigations, improving Largest Contentful Paint (LCP) by up to 45%.
- Initial implementation is conservative, prefetching only on touch/click events, with plans for more aggressive models in 2025.
- Speed Brain is available for all Cloudflare plans at no cost, already enabled by default on free domains.
- Prefetching is limited to cacheable static content to avoid side effects, with safeguards like rejecting non-cached prefetch requests.
- Cloudflare's global network ensures prefetched content is delivered quickly, reducing latency significantly.
- Future enhancements include machine learning for better prediction accuracy and integration with Argo Smart Routing for dynamic content optimization.
- Real User Measurements (RUM) is recommended to monitor performance improvements from Speed Brain.