Three async patterns I used building a broken-link checker

Saeeda — Thu, 12 Mar 2026 03:14:58 +0000

Three async patterns I used building a broken-link checker

A broken-link checker is the kind of project that begs for async — you're waiting on hundreds of HTTP responses, and doing that sequentially is painfully slow. I built link_checker, an async crawler that checks every link on a website, and along the way I leaned on three asyncio patterns that keep showing up in real-world async Python code.

Distributed Systems Design

Three async patterns I used building a broken-link checker

Three async patterns I used building a broken-link checker