https://github.com/rari-build/rari
Rari: High-performance React Server Components framework powered by a Rust runtime, delivering 14x faster P99 latency (< 2ms vs 28ms) and 12x higher throughput (21,263 vs 1,760 req/sec) than Next.js with zero-config setup.
https://github.com/rari-build/rari
rari react react-server-components rust server-rendering ssr web-framework
Last synced: 3 days ago
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Rari: High-performance React Server Components framework powered by a Rust runtime, delivering 14x faster P99 latency (< 2ms vs 28ms) and 12x higher throughput (21,263 vs 1,760 req/sec) than Next.js with zero-config setup.
- Host: GitHub
- URL: https://github.com/rari-build/rari
- Owner: rari-build
- License: mit
- Created: 2025-07-26T01:44:57.000Z (6 months ago)
- Default Branch: main
- Last Pushed: 2026-01-17T04:33:51.000Z (10 days ago)
- Last Synced: 2026-01-17T17:46:34.042Z (9 days ago)
- Topics: rari, react, react-server-components, rust, server-rendering, ssr, web-framework
- Language: Rust
- Homepage: https://rari.build
- Size: 10.6 MB
- Stars: 692
- Watchers: 2
- Forks: 17
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- Contributing: .github/CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Code of conduct: .github/CODE_OF_CONDUCT.md
- Codeowners: .github/CODEOWNERS
Awesome Lists containing this project
README
# Rari
> Runtime Accelerated Rendering Infrastructure
[](https://www.npmjs.com/package/rari)
[](https://opensource.org/licenses/MIT)
[](https://discord.gg/GSh2Ak3b8Q)
**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 12x higher throughput and 2x faster response times than Next.js.
## Features
- **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
## Quick Start
Create a new Rari application in seconds:
```bash
npm create rari-app@latest my-app
cd my-app
npm run dev
```
That's it! Your app will be running at `http://localhost:5173`.
Visit [rari.build/docs](https://rari.build/docs) for complete documentation, guides, and examples.
## Documentation
**[Read the full documentation](https://rari.build/docs)** 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
## Why Rari?
### Performance That Matters
- **2x faster response times** - 1.32ms vs 2.63ms average response
- **12x higher throughput** - 21,263 req/sec vs 1,760 req/sec under load
- **14x faster latency under load** - 1.94ms vs 27.89ms average latency
- **66% smaller bundles** - 28.1 KB vs 82.0 KB client JavaScript
- **2.6x faster builds** - 1.73s vs 4.43s production builds
### Developer Experience
- **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
## Performance
Rari delivers exceptional performance that significantly outperforms traditional React frameworks:
### Head-to-Head Comparison vs Next.js
> Benchmarks last updated: January 14, 2026
**Response Time (Single Request):**
| Metric | Rari | Next.js | Improvement |
|--------|------|---------|-------------|
| **Average** | **1.32ms** | 2.63ms | **2.0x faster** |
| **P95** | 3.36ms | 4.06ms | **1.2x faster** |
| **Bundle Size** | 28.1 KB | 82.0 KB | **66% smaller** |
**Throughput Under Load (50 concurrent connections, 30s):**
| Metric | Rari | Next.js | Improvement |
|--------|------|---------|-------------|
| **Requests/sec** | **21,263** | 1,760 | **12.1x higher** |
| **Avg Latency** | **1.94ms** | 27.89ms | **14.4x faster** |
| **P99 Latency** | **<2ms** | 28ms | **14x faster** |
| **Errors** | 0 | 0 | Stable |
**Build Performance:**
| Metric | Rari | Next.js | Improvement |
|--------|------|---------|-------------|
| **Build Time** | **1.73s** | 4.43s | **2.6x faster** |
| **Bundle Size** | 433 KB | 543 KB | **20% smaller** |
All benchmarks are reproducible. See [benchmarks/](https://github.com/rari-build/benchmarks) for methodology and scripts.
## Contributing
We welcome contributions! Here's how you can help:
- **Report Bugs** - Found an issue? [Open a bug report](https://github.com/rari-build/rari/issues/new)
- **Suggest Features** - Have ideas? [Share your suggestions](https://github.com/rari-build/rari/discussions)
- **Improve Docs** - Help make our documentation better
- **Submit PRs** - Check out our [Contributing Guide](.github/CONTRIBUTING.md)
## Community
- **Discord** - [Join our community](https://discord.gg/GSh2Ak3b8Q)
- **GitHub** - [Star the repo](https://github.com/rari-build/rari)
- **Documentation** - [rari.build/docs](https://rari.build/docs)
## License
MIT License - see [LICENSE](LICENSE) for details.