Getting Started with FastEdge

FastEdge lets you run WebAssembly on the Gcore edge network — close to your users, with cold starts measured in microseconds. In this guide you'll build your first worker from scratch.

Prerequisites

You'll need Rust installed and the wasm32-wasip1 target added:

rustup target add wasm32-wasip1

Create the Project

cargo new --lib my-fastedge-app
cd my-fastedge-app

Configure for WASM

Set the build target and add the FastEdge SDK to Cargo.toml:

# .cargo/config.toml
[build]
target = "wasm32-wasip1"

Write Your Handler

In src/lib.rs, create a simple HTTP handler:

use fastedge::{
    body::Body,
    http::{Request, Response, StatusCode, Error},
};

#[fastedge::http]
pub fn main(_req: Request) -> Result, Error> {
    Response::builder()
        .status(StatusCode::OK)
        .header("content-type", "text/plain")
        .body(Body::from("Hello from FastEdge!"))
}

Build and Deploy

cargo build --release
# Upload the wasm binary, then create the app via API

That's it! Your worker is now live on the global edge network.