rust-async-patterns
Master Rust async programming with Tokio, async traits, error handling, and concurrent patterns. Use when building async Rust applications, implementing concurrent systems, or debugging async code.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/wshobson/agents --skill rust-async-patterns- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads rust-async-patterns automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
Security audits
Independent scans of the skill's instructions and bundled files.
SKILL.md
The instructions your agent reads when the skill is triggered.
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"
use tokio::time::{sleep, Duration};
use anyhow::Result;
#[tokio::main]
async fn main() -> Result<()> {
// Initialize tracing
tracing_subscriber::fmt::init();
// Async operations
let result = fetch_data("https://api.example.com").await?;
println!("Got: {}", result);
Ok(())
}
async fn fetch_data(url: &str) -> Result<String> {
// Simulated async operation
sleep(Duration::from_millis(100)).await;
Ok(format!("Data from {}", url))
}
Detailed patterns and worked examples
Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
Best Practices
Do's
- Use
tokio::select!- For racing futures - Prefer channels - Over shared state when possible
- Use
JoinSet- For managing multiple tasks - Instrument with tracing - For debugging async code
- Handle cancellation - Check
CancellationToken
Don'ts
- Don't block - Never use
std::thread::sleepin async - Don't hold locks across awaits - Causes deadlocks
- Don't spawn unboundedly - Use semaphores for limits
- Don't ignore errors - Propagate with
?or log - Don't forget Send bounds - For spawned futures
FAQ
What does the rust-async-patterns skill do?
Master Rust async programming with Tokio, async traits, error handling, and concurrent patterns. Use when building async Rust applications, implementing concurrent systems, or debugging async code.
How do I install rust-async-patterns?
Run npx skills add https://github.com/wshobson/agents --skill rust-async-patterns in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/rust-async-patterns/ (personal) or .claude/skills/rust-async-patterns/ (project).
Which AI agents can use rust-async-patterns?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is rust-async-patterns safe to install?
Security partners have reviewed it: Gen Agent Trust Hub passed; Socket passed; Snyk passed; Runlayer passed; ZeroLeaks passed. As with any skill, read the SKILL.md and bundled scripts before installing.
Who maintains rust-async-patterns?
It is published by wshobson in wshobson/agents. It has 20,775 recorded installs.
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