Web crawlers
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Web Crawlers PowerPoint PPT Presentation


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Web Crawlers. Sam. What is a web crawler, what does it do?. Web crawlers are programs which the search the internet in a methodical manner. They constantly move site-to-site (thus the name crawler ) to provide the most up-to-date search results possible.

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Web Crawlers

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Web Crawlers

Sam


What is a web crawler, what does it do?

  • Web crawlers are programs which the search the internet in a methodical manner. They constantly move site-to-site (thus the name crawler) to provide the most up-to-date search results possible.

  • When a web crawler has found a webpage created or changed, it will index the page and address to the owner’s server, to make the user’s search happen much faster.


Examples of web crawler

  • Googlebot

  • Yahoo! Blurp

  • Bingbot

  • Can you think of what search engines use these crawlers? I can only imagine…


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