Finally, we tackle the topic of async/await in Rust, and specifically looking at how to use and think about async/await more so than how it works under the hood. My hope with this video is to convey the mental model and intuition you should use when using async/await in your own code, without getting bogged down in the details of Future, Pin, and Wakers. 0:00:00 Introduction 0:04:49 Fixing the video title 0:05:28 What is async fn? 0:10:40 awaiting futures 0:17:00 Yielding 0:20:03 Awaiting one of multiple futures 0:34:46 Cancellation 0:37:58 Executing futures 0:50:50 Select arms with side-effects 0:55:35 Cooperative scheduling 0:58:38 Selects with many arms 1:01:51 Fused futures 1:04:35 Overhead of async 1:07:56 Is select a future? 1:09:20 Awaiting multiple futures 1:19:17 Parallelism and spawning 1:30:37 Sharing across spawn 1:36:23 Runtime discovery 1:42:05 Stack variables in async 1:55:45 Async fn in traits 2:08:06 Asynchronous Mutexes 2:21:03 Do futures stay on a thread? 2:24:11 Async stack traces 2:33:04 Wrapping up The async book: https://rust-lang.github.io/async-book/ Tokio's mini-redis: https://github.com/tokio-rs/mini-redis/ Live version with chat: https://www.youtube.com/watch?v=CaCYL11_qEU