Rust Async Patterns by @wshobson · Skillet

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.

Permissions

Just instructions. No commands, network, or file access.

Files

SKILL.md

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.

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

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2 files · 12 KB3 KB

Version history

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))
}

Rust Async Patterns

Rust Async Patterns

When to Use This Skill

Core Concepts

1. Async Execution Model

2. Key Abstractions

Quick Start

Detailed patterns and worked examples

Best Practices

Do's

Don'ts