Asynchronous Rust: The Complete Guide

Asynchronous programming is the key to building modern high-performance servers, network services, and data processing tools. Rust, with its unique ownership system and zero-cost abstractions, offers one of the safest and most efficient approaches to asynchrony. The book "Asynchronous Rust: The Complete Guide" will take you from the very basics to the professional techniques needed to build reliable and scalable systems.

Who is this book for?

• Rust developers familiar with the language basics (ownership, borrowing, lifetimes) who want to master the async stack.
• Programmers from other languages (Python, Go, JavaScript) transitioning to Rust and seeking a deep understanding of async patterns.
• Engineers building web servers, databases, client-server applications, parsers, and network utilities.

What will you learn?

• The foundation of asynchronous Rust: breakdown of key concepts — Future, Stream, Sink, Executor. How the scheduler works and why Rust does not use green threads by default.
• Advanced work with async/await: composing futures, error handling, task cancellation, selectors, and join macros. You will learn to write non-blocking code without races and leaks.
• The Tokio and async-std ecosystem: a detailed guide to Tokio — the most popular runtime. Creating TCP/UDP servers, timers, channels (mpsc, broadcast), working with files and processes.
• Data streams and Streams: processing infinite data sequences, adapters (map, filter, fold), creating custom streams.
• The actor model and concurrency: building fault-tolerant systems with actors (actix-rt, riker). Load balancing, supervisors, graceful shutdown.
• Writing web applications: creating REST APIs and WebSocket servers based on warp, actix-web, or axum. Working with databases via async drivers (sqlx, tokio-postgres).
• Testing and benchmarking: unit tests for async code, integration tests with mocks, performance profiling.

Book features:

• Numerous practical examples — from a simple TCP echo server to a distributed chat.
• Step-by-step explanation of each code block.
• Chapters dedicated to common mistakes (deadlock, starvation, resource leak) and ways to prevent them.
• Tips on choosing libraries and designing architecture.

After reading, you will be able to confidently design and implement asynchronous systems in Rust, using the full potential of the language to create fast, safe, and scalable applications. The book is suitable both for self-study and as a reference guide.