// â éåæãå¿ è¦ãª15ã®ä»£è¡¨ã¦ã¼ã¹ã±ã¼ã¹ + æå°ã³ã¼ãä¾ // 1. Web API ãã³ãã©ã¼ï¼axumï¼ use axum::{routing::get, Router}; async fn api_handler() -> &'static str { "Hello, async API" } fn app() -> Router { Router::new().route("/", get(api_handler)) } // 2. è¤æ°ãªã¯ã¨ã¹ããåæå¦çï¼tokio::spawnï¼ #[tokio::main] async fn main_spawn() { for i in 0..3 { tokio::spawn(async move { println!("Task {} start", i); }); } } // 3. å¤é¨APIå¼ã³åºãï¼reqwestï¼ #[


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