Elysia - Modern TypeScript Web Framework
Elysia is a cutting-edge web framework designed for building high-performance backend applications with TypeScript. Built primarily for the Bun runtime, it offers:
Key Features
- Exceptional Performance: Benchmarked at 2.4M requests/second, 21x faster than Express and 6x faster than Fastify
- End-to-End Type Safety: First-class TypeScript support with built-in validation and schema support
- Flexible Validation: Compatible with popular validators like Zod, Valibot, ArkType, and Effect
- Modern Developer Experience:
- Built-in file handling
- WebSocket support with µWebSocket
- Stream response capabilities
- OpenAPI integration with automatic documentation generation
- Type-safe API development
Use Cases
- Building high-performance web servers
- Real-time applications with WebSocket requirements
- API development with automatic documentation
- TypeScript-first backend services
- Modern web applications requiring type safety and performance
While optimized for Bun, Elysia follows web standards, making it portable across different runtimes.
