Actix Web — Extremely Fast Web Framework for Rust

# Cargo.toml
[dependencies]
actix-web = "4"
serde = { version = "1", features = ["derive"] }

use actix_web::{web, App, HttpServer, HttpResponse};
use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize)]
struct Asset {
    repo: String,
    stars: u32,
}

async fn list() -> HttpResponse {
    let assets = vec![Asset { repo: "react".into(), stars: 230000 }];
    HttpResponse::Ok().json(assets)
}

async fn create(asset: web::Json<Asset>) -> HttpResponse {
    HttpResponse::Created().json(asset.into_inner())
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| {
        App::new()
            .route("/api/assets", web::get().to(list))
            .route("/api/assets", web::post().to(create))
    })
    .bind("0.0.0.0:8080")?
    .run()
    .await
}