Fastro Framework

The Ultra-Fast, Minimalist Web Framework for Deno.

Fastro bridges the gap between raw Deno performance and elite developer experience. Built for speed, security, and simplicity, it features a robust middleware engine, intelligent LRU caching, and a zero-boilerplate API.

Why Fastro?

• Maximum Throughput: Benchmark-proven to maintain >90% of raw Deno performance. Stop choosing between DX and speed.
• Intuitive API: Return string, JSON, or Response directly. No more .send() or .json() boilerplate.
• Lean & Secure: Zero external dependencies. Built strictly on top-tier Deno standards.
• Organized Scaling: Advanced directory-based module loading keeps your project clean as you grow.
• Rock-Solid Core: 100% test coverage and first-class TypeScript support ensure your app stays stable.

Features

• Blazing Fast Routing: Optimized pattern matching with intelligent LRU caching for high-traffic apps.
• Flexible Middleware: Seamless global, router, and route-level middleware with an async/await flow you already know.
• Auto-Loading Modules: Register entire directories of functionality with a single command.
• Type-Safe by Default: Enjoy deep IDE integration and compile-time safety.
• Benchmark-First: Built-in verification tools to ensure your app stays as fast as native Deno.

Performance That Matters

Don’t take our word for it. Benchmarks conducted using Grafana k6 (100 VUs, 10s):

“Fastro provides a complete developer-friendly abstraction without sacrificing the performance advantages of Deno.”

Check the detailed benchmark report.

Quick Start

Build and serve your first app in seconds:

import Fastro from "./mod.ts";

const app = new Fastro();

// Simple string response
app.get("/", () => "Welcome to Fastro!");

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

// Powerful, predictable middleware
app.use((req, ctx, next) => {
  ctx.startTime = Date.now();
  return next();
});

await app.serve({ port: 8000 });

Documentation

Master Fastro in minutes with our comprehensive guide, covering everything from routing to deep-level middleware.

Development

Get involved or test it yourself:

# Run the test suite
deno task test

# Generate a 100% coverage report
deno task cov

# Run local performance benchmark
deno task bench

Community & Contributing

Fastro thrives on your ideas! Whether you’re fixing a bug, suggesting a feature, or writing a custom middleware, we welcome your contributions.

• Explore our Middleware Collection and add yours!
• Share your creations in our Showcase and inspire the community!
• Check out our Contributing Guide for details on creating middlewares and development workflows.
• Have a question? Open an issue.