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same for a longer period of time, we might not explore it for a few months. John Mueller This implies that the significant change frequency is learned over time on web pages by search engines (this is also mentioned in Google Patents crawling efficiency) by comparing current copies with previous copies of the page to detect critical rate of change patterns. Emphasis is placed on the importance of page changes to search engine users (“
Critical Material Change”) and also the importance of the pages themselves to users (Page Importance, which may include the PageRank). Note that fax number list Mueller says, " WHAT we think this page might change." It must change a key feature (“critical material change”) of the page that is useful to search engine users. Why can't Googlebot visit all migrated pages at once? From the above, we can conclude that Googlebots primarily arrive at a website with a goal, a “work schedule” and a “bucket list” of URLs to crawl during a visit. The bucket list
URLs were assigned to it by "The Scheduler" in the Google search engine system, according to numerous Google patents relating to crawling efficiency (see image). Planner for search engine crawler I say “mostly” because initial discovery exploration of brand new sites is different. There's no knowledge of what already exists, so there's nothing - no older versions of URLs - against which the planner can compare anything. When Googlebot arrives at your site, if your