The Async Runtime: Futures, Tasks & Scheduling. Why Rust Needs a Runtime Crate. Rust's standard library defines async/await syntax and the Future trait, but ships no executor — futures are lazy state machines that do not…
ReadAsync I/O, Coordination Primitives & Servers. Racing Futures with select!. use tokio::time::{timeout, Duration}; tokio::select! { res = fetch_from_primary() => println!("primary: {res:?}"), res = fetch_from_backup() => p…
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