Rust Async Patterns

A comprehensive guide to async Rust that goes beyond the basics. Covers production patterns like JoinSet for concurrent tasks, proper channel selection between mpsc/broadcast/oneshot, graceful shutdown with CancellationToken, and async trait implementations. The error handling section shows both anyhow and thiserror approaches with concrete examples. What I like here is the emphasis on real patterns you actually need in production, not just hello world async examples. The concurrency limiting with buffer_unordered and timeout wrappers address common pain points. Good reference when you're past the "add .await everywhere" stage and need to build robust async systems.

install copies · 90 days. Times the install command was copied on this site in the last 90 days, bots filtered.: 13
skills.sh installs: 21.9K
GitHub stars: 42.4K
last updated: Aug 21, 2026

View on GitHub

Install

$ npx -y skills add wshobson/agents --skill rust-async-patterns --agent claude-code

Installs into .claude/skills of the current project.

Files

Rust Async Patterns

Production patterns for async Rust programming with Tokio runtime, including tasks, channels, streams, and error handling.

When to Use This Skill

Building async Rust applications
Implementing concurrent network services
Using Tokio for async I/O
Handling async errors properly
Debugging async code issues
Optimizing async performance

Core Concepts

1. Async Execution Model

Future (lazy) → poll() → Ready(value) | Pending
                ↑           ↓
              Waker ← Runtime schedules

2. Key Abstractions

Concept	Purpose
`Future`	Lazy computation that may complete later
`async fn`	Function returning impl Future
`await`	Suspend until future completes
`Task`	Spawned future running concurrently
`Runtime`	Executor that polls futures

Quick Start

# Cargo.toml
[dependencies]
tokio = { version = "1", features = ["full"] }
futures = "0.3"
async-trait = "0.1"
anyhow = "1.0"
tracing = "0.1"
tracing-subscriber = "0.3"

SKILL.md on GitHub