Robots.txt files can be centralized on CDNs, not just root domains. Websites can redirect robots.txt from main domain to CDN. This unorthodox approach complies with updated standards. Google's Gary ...
A practical look at modern robots.txt use, from allow and disallow logic to wildcards, crawl-rate control and avoiding common pitfalls. The Robots Exclusion Protocol (REP), better known as robots.txt, ...
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