
Incremental Web Scraping and Change Detection
Incremental web scraping cuts cost: use sitemap lastmod, ETag and Last-Modified 304s, and content hashing to re-scrape only the pages that actually changed.
SparkProxy·Guides
Everything tagged change detection.

Incremental web scraping cuts cost: use sitemap lastmod, ETag and Last-Modified 304s, and content hashing to re-scrape only the pages that actually changed.









