Server errors, timeouts, or overload signals can cause Googlebot to reduce crawling.

Sources

• What Crawl Budget Means for Googlebot

  Google Search Central Blog · primary source · retrieved 2026-08-18

  “a significant number of 5xx errors or connection timeouts signal the opposite, and crawling slows down” — Q&A: Does site speed affect my crawl budget? How about errors?

• Reduce Google Crawl Rate

  Google Crawling Infrastructure Documentation · primary source · retrieved 2026-08-18

  “Google's crawling infrastructure reduces your site's crawling rate when it encounters a significant number of URLs with 500, 503, or 429” — Urgently reduce crawler traffic section

• Crawl Budget Management | Google Crawling Infrastructure | Crawling infrastructure | Google for Developers

  Google · primary source · retrieved 2026-08-18

  “If the site slows down (latency increases or response times become longer)” — line 72

  “the limit goes down and Google crawls less.” — line 72

• Troubleshoot Google Search Crawling Errors | Google Search Central | Documentation | Google for Developers

  Google · primary source · retrieved 2026-08-18

  “Googlebot will scale back its crawling if it detects that your servers are having trouble responding to crawl requests.” — line 166

• Googlebot Crawl Slump? Mueller Points To Server Errors

  Search Engine Journal · retrieved 2026-08-18

  “He suggests sudden declines usually indicate 429/500/503 or timeouts, not 404s” — Report of John Mueller guidance on crawl drops

• Uptime and server availability: the real impact on crawling

  3CWeb Marketing Online · retrieved 2026-08-18

  “If the volume of 5xx errors rises above what's normal for that domain, the crawl-rate management system automatically reduces crawl speed” — line 73