Search spiders.. how they work to find information across millions of sites



Search engines have made the Internet interconnected in the way we are today.  These services allow the user to search for any topic that interests him and find what suits him through millions of websites on the network.  Perhaps many of us have asked how this happened.


 This question appears among millions of users when using a search engine such as Google.  As the user enters a word that expresses a topic he wants to know more about, Google immediately shows thousands of pages related to the topic.

This question can be answered with one phrase, “search spiders”.  The basis for the online search process and the core component of current search engines.

 What are search spiders and how do they work

 Search spiders are known in English as “Web Crawlers,” which literally translates to “web crawlers” or “internet crawlers.”  However, they are known metaphorically as search spiders.


 Search spiders start their work as soon as the user types a word that he would like to search for within the search engine used.  There is no doubt that the most famous engine is Google, followed by Bing from Microsoft.


 These spiders are just automated software.  They are also known as bots.  And it searches among the millions of pre-recorded results within the search engine, to come up with what the user needs in the end.


 The working mechanism of this software is actually simple and effective at the same time.  When the user performs any search, the engine relies on these electronic crawlers to extract the required pages from the databases and then display them.



 After this process is completed, Web Crawlers store a copy of the viewed pages in the search engine's database, which makes it easier to access them later and consumes less engine resources.


 This simple software can be described as a mediator between websites and search engines.


 In order for search engines to display results from a site, the search "spider" must have previously archived it.  This process depends on a number of factors.  Most notably, the site owner asks the search engine to display its results.

Search engines - using their spiders - automatically archive pages from popular and trusted sites, which is why all sites are keen on "search engine optimization" so that their results are displayed within Google searches and others.


 Website owners can ask search spiders not to archive certain pages.  This process is done through a file known as robots.txt that the site owner adds.  This file tells search spiders that you don't want them to display your site or some of its pages as search results.


 Websites of all kinds benefit from this process.  Targeting keywords well leads to Google showing them when they search for them, and this results in searchers visiting those sites in the end.

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