21CTO

Sep 7, 2018 · Backend Development

Why Scaling Web Crawlers Is Harder Than You Think: Lessons from 1,000B Pages

This article outlines the major challenges of large‑scale e‑commerce product data extraction—such as ever‑changing site formats, scalable architecture, performance throughput, anti‑bot defenses, and data quality—and shares the hard‑won lessons Scrapinghub gained after crawling over a trillion product pages.