Runtime Accelerated Rendering Infrastructure
rari is a high-performance React Server Components framework powered by a Rust runtime. Built for performance, scalability, and developer experience.
With proper app router support, true server-side rendering, and correct RSC semantics, rari delivers 8.7x higher throughput and 7.5x faster response times than Next.js.
- App Router - File-based routing with layouts, loading states, and error boundaries
- True Server-Side Rendering - Pre-rendered HTML with instant hydration
- React Server Components - Server components by default, client components when you need them
- Rust-powered runtime - Persistent runtime for maximum performance
- Zero-config setup - Works out of the box with pre-built binaries
- Hot module reloading - Instant feedback during development
- Universal NPM package support - Use any npm package seamlessly
- TypeScript-first - Full type safety across server/client boundary
- Cross-platform - Supports macOS, Linux, and Windows
- Streaming SSR - Progressive rendering with Suspense boundaries
- Loading States - Automatic loading skeletons during navigation
Create a new rari application in seconds:
npm create rari-app@latest my-app
cd my-app
npm run devThat's it! Your app will be running at http://localhost:5173.
Visit rari.build/docs for complete documentation, guides, and examples.
Read the full documentation to learn more about:
- Getting started with rari
- App Router and file-based routing
- Server Components and Client Components
- Server Actions and data mutations
- Streaming SSR and Suspense
- Deployment and production optimization
- 7.5x faster response times - 0.35ms vs 2.64ms average response
- 8.7x higher throughput - 14,085 req/sec vs 1,624 req/sec under load
- 8.7x faster latency under load - 3.55ms vs 30.79ms average latency
- 53% smaller bundles - 266 KB vs 565 KB client JavaScript
- 2.9x faster builds - 1.41s vs 4.10s production builds
- App Router - File-based routing with automatic code splitting
- Zero configuration - Create projects instantly with
create-rari-app - Hot module reloading - See changes instantly during development
- Full TypeScript support - Complete type safety across server/client boundary
- Correct RSC semantics - Server components by default,
'use client'for interactivity - Cross-platform - Works on macOS, Linux, and Windows
rari delivers exceptional performance that significantly outperforms traditional React frameworks:
Benchmarks last updated: January 26, 2026
Response Time (Single Request):
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Average | 0.35ms | 2.64ms | 7.5x faster |
| P95 | 0.38ms | 3.44ms | 9.1x faster |
| Bundle Size | 266 KB | 565 KB | 53% smaller |
Throughput Under Load (50 concurrent connections, 30s):
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Requests/sec | 14,085 | 1,624 | 8.7x higher |
| Avg Latency | 3.55ms | 30.79ms | 8.7x faster |
| P95 Latency | 5.78ms | 38.43ms | 6.6x faster |
| Errors | 0 | 0 | Stable |
Build Performance:
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Build Time | 1.41s | 4.10s | 2.9x faster |
| Bundle Size | 266 KB | 565 KB | 53% smaller |
All benchmarks are reproducible. See benchmarks/ for methodology and scripts.
We welcome contributions! Here's how you can help:
- Report Bugs - Found an issue? Open a bug report
- Suggest Features - Have ideas? Share your suggestions
- Improve Docs - Help make our documentation better
- Submit PRs - Check out our Contributing Guide
- Discord - Join our community
- GitHub - Star the repo
- Documentation - rari.build/docs
MIT License - see LICENSE for details.
