High-performance, minimalist web framework for Deno

Fastro is a blazing-fast, type-safe, and zero-dependency web framework meticulously engineered for Deno. It is built for developers who demand peak performance without sacrificing a clean and intuitive developer experience.

🚀 Engineered for Speed
Achieve near-native Deno throughput. Powered by our latest pre-built middleware chains and unified cache fast-path, Fastro eliminates dispatch overhead, ensuring your application remains responsive under extreme load. (Benchmarks)

Zero-Friction DX
Write clean, declarative code. Return JSON objects, strings, or native Responses directly from your handlers. No boilerplate, no complex abstractions—just pure productivity.

Zero Dependency Core
A minimalist, rock-solid engine with absolutely no external dependencies. Keep your stack light, secure, and easy to maintain.

Built to Scale
Easily manage complex architectures with automatic module loading and a modular design that grows with your application.

Rock Solid Reliability
Deploy with absolute confidence. Fastro guarantees industrial-grade stability with 100% branch and line coverage across the entire project core.

Start in seconds

import Fastro from "https://deno.land/x/fastro/mod.ts";

const app = new Fastro();

app.get("/user/:id", (req, ctx) => {
  return { id: ctx.params.id, status: "active" };
});

app.serve({ port: 8000 });

Convenience tasks (via deno.json):

• Start the app:

  deno task start

• Run the local benchmark script (requires k6):

  deno task bench

• Run the test suite:

  deno task test

• Produce LCOV coverage:

  deno task cov

Resources

• Docs: https://fastro.deno.dev/DOCS.md
• Middlewares: https://fastro.deno.dev/MIDDLEWARES.md
• Benchmarks: https://fastro.deno.dev/BENCHMARK.md
• Contributing: https://fastro.deno.dev/CONTRIBUTING.md