React on Rails Pro: Introducing React Server Components & SSR Streaming
Subject: 🚀 Revolutionary Performance Boost: React Server Components & SSR Streaming Now Available in React on Rails Pro
June 24, 2025
We're thrilled to announce a major update: React on Rails Pro now supports React Server Components and Server‑Side Rendering (SSR) Streaming. These features have driven significant performance gains in real‑world applications—here’s how they can transform yours.
🎯 What This Means for Your Applications
- Faster load times
- Smaller JavaScript bundles
- Better Core Web Vitals
- Improved SEO
- Smoother user interactions
🔥 React Server Components
Server Components execute on the server and stream HTML to the client—no extra JavaScript in your bundle. Real‑world results include:
- 62% reduction in client‑side bundle size on productonboarding.com when migrating to RSC [1]
- 63% improvement in Google Speed Index on the RSC version of the same site [1]
- 52% smaller JavaScript codebase and Lighthouse scores rising from ~50 to 90+ on GeekyAnts.com [2]
🌊 SSR Streaming
SSR Streaming sends HTML to the browser in chunks as it’s generated, enabling progressive rendering:
- 30% faster full‑page load times at Hulu by combining streaming SSR with Server Components [3]
- Popular libraries like styled‑components v3.1.0 have introduced streaming SSR support as the next generation of React app rendering [4]
📊 Core Web Vitals & TTI Improvements
- 60% faster Time to Interactive on Meta’s developer portal after adopting RSC (from 3.5 s to ~1.4 s) [5]
- 45% quicker First Contentful Paint in the same migration [5]
- 50% lower server response time with Server Components [5]
- 15% improvement in Core Web Vitals and 23% reduction in Time to First Byte at Airbnb after RSC migration [5]
Adopting these features in React on Rails Pro will help you deliver faster, leaner, and more SEO‑friendly applications with fewer client‑side resources.
Ready to get started?
- Check out the docs for RSC with React on Rails Pro.
- Update to the latest React on Rails Pro version
- Follow our RSC & SSR Streaming migration guide
Let’s make your apps faster—together.
📚 References
- productonboarding.com experiment: 62% bundle reduction, 63% Speed Index gain (frigade.com)
- GeekyAnts.com case study: 52% code reduction, Lighthouse 50→90+ (geekyants.com)
- Hulu—30% faster full‑page loads with streaming SSR + RSC (questlab.pro)
- styled‑components v3.1.0: introduced streaming SSR support as the next generation of React rendering. (medium.com)
- QuestLab: Meta’s RSC migration—30% JS reduction, 60% faster TTI, 45% faster FCP, 50% lower server response (questlab.pro)