Get a fundamental understanding of asynchronous programming and Rust's futures by working through examples that show you how everything really works Key Features - Master asynchronous Rust through examples focusing on key concepts - Build a solid understanding of concepts such as coroutines, fibers, futures, and callbacks - Explore Rust's futures, craft your own runtime, and excel in handling stacks, ABIs, syscalls, and inline assembly - Purchase of the print or Kindle book includes a free PDF eBook Book Description Step into the world of asynchronous programming with confidence by conquering the challenges of unclear concepts with this hands-on guide. Using functional examples, this book simplifies the trickiest concepts, exploring goroutines, fibers, futures, and callbacks to help you navigate the vast Rust async ecosystem with ease. You'll start by building a solid foundation in asynchronous programming and explore diverse strategies for modeling program flow. The book then guides you through concepts like epoll, coroutines, green threads, and callbacks using practical examples. The final section focuses on Rust, examining futures, generators, and the reactor-executor pattern. You'll apply your knowledge to create your own runtime, solidifying expertise in this dynamic domain. Throughout the book, you'll not only gain proficiency in Rust's async features but also see how Rust models asynchronous program flow. By the end of the book, you'll possess the knowledge and practical skills needed to actively contribute to the Rust async ecosystem. What you will learn - Explore the essence of asynchronous program flow and its significance - Understand the difference between concurrency and parallelism - Gain insights into how computers and operating systems handle concurrent tasks - Uncover the mechanics of async/await - Understand Rust's futures by implementing them yourself - Implement green threads from scratch to thoroughly understand them Who this book is for This book is for programmers who want to enhance their understanding of asynchronous programming, especially those experienced in VM'ed or interpreted languages like C#, Java, Python, JavaScript, and Go. If you work with C or C++ but have had limited exposure to asynchronous programming, this book serves as a resource to broaden your knowledge in this area. Although the examples are predominantly in Rust, the intricacies of Rust's futures are covered in detail. So, anyone with a keen interest in learning Rust or with working knowledge of Rust will be able to get the most out of this book. Table of Contents - An Introduction to Asynchronous Programming - Epoll, Kqueue and IOCP - Epoll example - Different strategies for modelling asynchronous program flow - Stackfull Coroutines/Green Threads/Fibers [Example] - Callbacks and promises [Example] - Futures in Rust - Coroutines and async/await - Runtimes, Wakers, and the Reactor-Executor Pattern - Coroutines, Self-Referential Structs, and Pinning - Creating Your Own Runtime “This book feels like a scenic and informal safari up through the levels of abstraction of asynchrony, taking the time for detours and explanations of related concepts just as if you were discovering the topics gradually on your own. It's like a conversation with the author rather than a lecture. It happens to take place in Rust, and ultimately does shed light on many of the nuances of Rust's particular implementation of asynchrony, but that is almost just a by-product of the learning journey. This book won't be for those looking for quick answers or to-the-point explanations, but if you enjoy learning by exploration, you'll feel right at home!” Jon Gjengset, Principal Engineer at Helsing; Previous Owner of Rust build tooling at AWS; Author of Rust for Rustaceans; Co-founder of ReadySet “I've been teaching and writing async Rust code since the early days of the language and enjoyed reading this book. I will recommend it to my students as it is important to understand what is happening under the hood when you use the async/await paradigm. I really like the low-level nature of the examples and the excellent hand-drawn diagrams. The section on writing your own runtime and wakers was very good and I'm going to re-read this on a sunny Sunday afternoon in the garden. In conclusion, a deep topic and well presented. Not just a Tokio manual!” Andy Thomason, Head of Research at Superchain Network Carl Fredrik Samson is a popular technology writer and has been active in the Rust community since 2018. He has an MSc in Business Administration where he specialized in strategy and finance. When not writing, he's a father of two children and a CEO of a company with 300 employees. He's been interested in different kinds of technologies his whole life and his programming experience ranges from programming against old IBM mainframes to modern cloud computing, using everything from assembly to Visual Basic for Applications. He has contributed to several ope