0165-rust-async-patterns

What problem does it solve?

It solves the complexity of writing correct, maintainable async Rust code—especially around concurrency, communication, error propagation, and graceful shutdown—so your application behaves predictably under load.

Core Features & Use Cases

• Concurrent task execution with Tokio: run many async operations in parallel using JoinSet, buffer_unordered, and select for racing/fast-fail behavior.
• Inter-task communication with channels: coordinate producers and consumers via mpsc, broadcast, oneshot, and watch patterns.
• Production-grade error handling: combine anyhow context with typed errors (e.g., thiserror) and wrap operations with timeouts.
• Async lifecycle management: implement graceful shutdown using CancellationToken or broadcast, ensuring tasks stop cleanly.
• Async abstractions and iteration: structure async behavior with async traits and process async streams with map/filter/chunks/merge.

Quick Start

Use it when you need to implement an async Tokio-powered service that concurrently fetches work, coordinates via channels, handles failures with context and timeouts, and shuts down cleanly after receiving Ctrl+C.