![]() If a search engine detects changes to a page after crawling a page, it will update it’s index in response to these detected changes. ![]() Pages known to the search engine are crawled periodically to determine whether any changes have been made to the page’s content since the last time it was crawled. Let’s start with the crawling process.Ĭrawling is the process used by search engine web crawlers (bots or spiders) to visit and download a page and extract its links in order to discover additional pages. Now that you’ve got a top level understanding about how search engines work, let’s delve deeper into the processes that search engine and web crawlers use to understand the web.
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