Rari
lastmod 2025-11-06created 2025-11-061 edits
An ultra-fast React Server Components framework
About
- Rari = Runtime Accelerated Rendering Infrastructure
- A high-performance RSC framework built on a Rust runtime, with 12x better P99 latency and 10.5x higher throughput than Next.js
- App Router: provides file-based routing. Layouts, loading states, error boundaries
- True server-side rendering (SSR) : supports pre-rendered HTML and immediate hydration
- Built-in React Server Components support : server components by default, switch to client with 'use client' when needed
- Zero-config setup: pre-built binaries run immediately after installation
- Hot Module Reloading gives instant feedback during development
- TypeScript-first design ensures full type safety between server·client
- Cross-platform support : behaves the same on macOS, Linux, and Windows
- Streaming RSC and React Suspense features are in development
- Supports creating a project instantly with create-rari-app
Performance metrics
- 3.8x faster average response time (0.69ms vs 2.58ms)
- 10.5x higher throughput under load (20,226 req/sec)
- 68% smaller bundle size (27.6KB vs 85.9KB)
- 5.6x faster builds (1.64s vs 9.11s)
Technical features
- Ultra-fast rendering by combining a Rust runtime with the Vite build system
- Keeps NPM package compatibility, fully integrated with the existing React ecosystem
- Supports environment variable-based configuration (PORT, NODE_ENV, RUST_LOG)