How search engine spider crawl the site?
Can anyone know the flowchart of how crawling?
A Web crawler is a computer program that browses the World Wide Web in a methodical, automated manner or in an orderly fashion. This process is called Web crawling or spidering. Many sites, in particular search engines, use spidering as a means of providing up-to-date data. Web crawlers are mainly used to create a copy of all the visited pages for later processing by a search engine that will index the downloaded pages to provide fast searches.
Don't know where you dug this up...it's 7 years old and it was spam then, For future reference, keep an eye on the dates.
And the answer is quite simple...How do search engines crawl?...
They follow links.
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To learn more on the an incredible number of Websites that you can get, a google look for engine utilizes special software spiders, known as spiders, to develop details of the terms discovered on Web sites. When a spider is building its details, the process is known as Web creeping or crawling. (There are some drawbacks to contacting part of the Internet the World Wide Web -- a large set of arachnid-centric titles for resources is one of them.) In order to develop and sustain a useful list of terms, a look for engine's spiders have to look at a lot of webpages.
How does any spider start its journeys over the Web? The regular starting factors are details of intensely used hosts and very well-known webpages. The spider will begin with a well-known website, listing the terms on its webpages and following every weblink discovered within the website. In this way, the spidering system quickly starts to travel, growing out across the most commonly used areas the Web.
Google began as an academic search engine.spiders deos his work quickly.They built their initial system to use multiple spiders, usually three at one time. Each spider could keep about 300 connections to Web pages open at a time. At its peak performance, using four spiders, their system could crawl over 100 pages per second, generating around 600 kilobytes of data each second.Google had its own DNS, in order to keep delays to a minimum.
When the Google spider looked at an HTML page or website, it took note of two things:
1.The words within the page
2.Where the words were found
Words happening in the headline, subtitles, meta data and other roles of comparative significance were mentioned for special concern during a following customer search. The Search engines examine was designed to catalog every important term on a page, making out the content "a," "an" and "the." Other robots take different techniques.
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