Distributed Crawling Patterns with Message Queues and Backpressure Control
· 14 min read
Distributed web crawling in 2025 is no longer about scaling a simple script to multiple machines; it is about building resilient, adaptive data acquisition systems that can survive sophisticated anti‑bot defenses, high traffic volume, and rapidly changing site structures. At the core of modern architectures are message queues and explicit backpressure control mechanisms that govern how crawl tasks flow through fleets of workers.