How google work

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• Google runs on a distributed network of thousands of computers and can therefore carry out fast parallel processing. Google has three distinct parts
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• Googlebot, Google’s Web Crawler
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• Googlebot is Google’s web crawling robot, which finds and retrieves pages on the web and hands them off to the Google indexer
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• Google Indexer
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• This index is sorted alphabetically by search term, with each index entry storing a list of documents in which the term appears and the location within the text where it occurs
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• Google Query’s Processor
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• The query processor has several parts, including the user interface (search box), the “engine” that evaluates queries and matches them to relevant documents, and the results formatter
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