# Background Jobs And Async Processing

> Design reliable background jobs, queues, and asynchronous processing with proper retries, visibility, and failure handling. Use when offloading work from request/response paths or building async workflows.

- Skill: `itsual/background-jobs-and-async-processing` (Agent Skill)
- Install (CLI): `npx skillmds@latest add itsual/background-jobs-and-async-processing`
- Raw SKILL.md: https://api.skillmd.com/api/skills/itsual/background-jobs-and-async-processing/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: itsual (https://skillmd.com/u/itsual)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/itsual/background-jobs-and-async-processing

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# Background Jobs and Async Processing

## Overview

Moving work out of the critical request path improves responsiveness and scalability, but introduces new failure modes that must be handled deliberately.

## When to Use

- Long-running or resource-intensive tasks
- Work that can be eventually consistent
- Decoupling producers from consumers
- Scheduled or recurring work

## Key Design Points

- Idempotency of job handlers
- Retry strategy with backoff
- Dead-letter / failed job handling
- Visibility timeouts and at-least-once delivery realities
- Observability (queue depth, processing latency, failure rates)
- Ordering requirements (if any)

## Principles

- Prefer simple, well-understood queue systems unless complexity is justified
- Make jobs restartable and side-effect safe
- Surface failures clearly

## Verification

- Failed jobs are visible and recoverable
- Duplicate execution does not cause incorrect results
- Key metrics are monitored