async-patterns

Add fiber-based concurrency to Ruby applications using the async gem.

7|Updated Mar 22, 2026

Search Tags:#concurrency #async #http #ruby #fibers #falcon

Ready to run

npx skills add https://github.com/slbug/claude-ruby-grape-rails --skill async-patterns-slbug

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Please help me install this Agent Skill.
Skill: async-patterns
Source: https://github.com/slbug/claude-ruby-grape-rails/tree/main/plugins/ruby-grape-rails/skills/async-patterns
Command: npx skills add https://github.com/slbug/claude-ruby-grape-rails --skill async-patterns-slbug

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Ruby applications often need to handle many I/O‑bound operations such as HTTP calls, file streaming, or database queries. Using traditional threads can consume excess resources, while synchronous code blocks progress. This Skill provides guidance to introduce lightweight, fiber‑based concurrency using the async gem and compatible servers.

Core Features & Use Cases

Concurrent HTTP requests: Run multiple web calls in parallel and combine results efficiently.
Async job processing: Queue and execute background jobs without blocking the main reactor.
Falcon server integration: Deploy a high‑performance async web server for Rails or Grape APIs.
Concurrency patterns: Apply semaphores, barriers, and condition variables to control resource usage and coordinate tasks.
Testing utilities: Use async‑rspec helpers to verify that concurrent code behaves as expected.

Quick Start

Ask the async skill to fetch several URLs concurrently and return each response’s size.

Frequently Asked Questions about async-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I handle concurrent HTTP requests in Ruby without blocking the reactor?▼

Run multiple HTTP requests concurrently in Ruby by using the async gem to schedule lightweight fibers, allowing parallel I/O-bound web calls to execute and combine results without blocking the reactor.

What is the best way to add async job processing to a Ruby application?▼

Add async job processing to Ruby applications by using the async gem to queue and execute background fiber-based tasks, preventing concurrent I/O operations from blocking the main reactor.

Does the async gem work with the Falcon server for Rails APIs?▼

Yes, the async gem integrates with the Falcon server to deploy a high-performance async web server for Rails or Grape APIs, utilizing fiber-based concurrency for lightweight I/O scheduling.

How do I control resource usage during concurrent I/O operations in Ruby?▼

Control resource usage during concurrent I/O operations by applying async concurrency patterns like semaphores, barriers, and condition variables to coordinate fiber scheduling and limit resource consumption.

Can I use async-rspec helpers to test concurrent Ruby code?▼

Yes, you can use async-rspec helpers as testing utilities to verify that your concurrent Ruby code behaves as expected when running fiber-based I/O operations.

Why use fibers instead of threads for I/O-bound tasks in Ruby?▼

Use fibers instead of threads for I/O-bound tasks in Ruby because traditional threads consume excess resources and block progress, whereas fibers provide lightweight scheduling without blocking the reactor.