Autumn 🍂

Spring Boot-style web framework for Rust, built on Axum.

Autumn assembles proven Rust crates into a convention-over-configuration web stack with proc-macro ergonomics, framework defaults, and customization options when you need them. If Spring Boot, Rails, or Laravel feels familiar, Autumn aims for that same "ship the app, not the plumbing" shape in Rust.

Features

• Route and app macros - #[get], #[post], #[put], #[delete], routes![], #[autumn_web::main]
• Pre-rendering pages to static HTML - #[static_get] + static_routes![] with autumn build pre-rendering to dist/
• Application builder - .routes(), .tasks(), .static_routes(), .scoped(), .merge(), and .nest()
• Configuration and profiles - defaults, autumn.toml, autumn-{profile}.toml, and AUTUMN_* overrides
• Database ergonomics - async Postgres pool, Db extractor, #[model], #[repository], hooks, and embedded migrations
• HTML stack - Maud templating, bundled htmx, Tailwind build pipeline, and static asset serving
• Operations - /health, /actuator/*, structured logging, metrics, and graceful shutdown
• Background work - #[scheduled] tasks and runtime task visibility at /actuator/tasks
• Security primitives - session cookies, auth extractor, security headers, CSRF, and #[secured]
• CLI workflow - autumn new, autumn setup, autumn dev, autumn build, and autumn migrate

Quickstart

# Install the CLI from this workspace

cargo install --path autumn-cli


# Create a new project

autumn new my-app

cd my-app


# Optional: download Tailwind CSS for styled builds

autumn setup


# Development server with file watching

autumn dev


# Or run without watch mode

# cargo run

Visit http://localhost:3000. Autumn also auto-mounts /health, /actuator/health, /actuator/info, and /static/js/htmx.min.js.

Watching custom directories

autumn dev always watches src/, static/, templates/, and migrations/ plus the project's top-level config files (autumn.toml, Cargo.toml, Cargo.lock, build.rs, tailwind.config.js). To watch additional folders (for example, custom view or locale trees), add a [dev] section to autumn.toml:

[dev]

watch_dirs = ["views", "locales"]

Listed directories are watched recursively in addition to the defaults. Multi-segment paths like content/locales are supported. Changes inside them trigger a server restart and a full browser reload. Paths under target/ and dotted directories are still ignored.

Entries must be project-relative; absolute paths, .. traversal, target, and dotted directories (e.g. .git) are rejected with a warning. Missing directories are skipped at startup.

If you add #[static_get] routes, autumn build pre-renders them into dist/.

Local-Safe vs Production-Safe

Autumn still distinguishes between "works on your laptop" and "safe to run in a multi-replica deployment":

• Local-safe defaults: in-memory sessions, pretty logs in dev, process-local #[scheduled] tasks, and single-binary startup.
• Production-safe defaults: /live, /ready, /startup probes, OTLP telemetry config, Redis-backed sessions, container scaffolding from autumn new, and explicit migration jobs before web replicas roll.

If you are deploying beyond a single process, read the Cloud-Native Guide before treating the defaults as done.

Example

This is the main.rs generated by autumn new:

use autumn_web::prelude::*;

#[get("/")]
async fn index() -> &'static str {
    "Welcome to Autumn!"
}

#[get("/hello/{name}")]
async fn hello_name(name: autumn_web::extract::Path<String>) -> String {
    format!("Hello, {}!", *name)
}

#[autumn_web::main]
async fn main() {
    autumn_web::app()
        .routes(routes![index, hello_name])
        .run()
        .await;
}

Built On

• Axum - async HTTP routing and middleware
• Diesel + diesel-async - database access
• Maud - compiled HTML templates
• htmx - HTML-first interactivity
• Tailwind CSS - utility-first styling
• Tokio - async runtime
• Tracing - structured logging

Examples

Documentation

• Getting Started Guide
• Cloud-Native Guide
• Todo Tutorial
• API Reference
• Pre-rendering Design Notes
• Stability Policy — SemVer, MSRV, and migration commitments

Stability

Autumn commits to Semantic Versioning for its public API starting at 1.0.0. See STABILITY.md for the full definition of the stable surface, the MSRV policy, and the migration-guide process for future major releases.

Until 1.0.0, Autumn is in its 0.x series — see the pre-1.0 notes for what that means in practice.

Requirements

• Rust 1.88.0+ (edition 2024)
• PostgreSQL for database-backed apps

Autumn can still run without a database if you omit the [database] section.

License

MIT OR Apache-2.0