Life of a Google Query

Written by Pavan Kumar on November 20, 2008



While browsing through some details about PageRank, I reached technology overview page on Google and found some interesting diagrammatic representation of life cycle of a google query. Here I am presenting the same which helps even a non techie to get a overview of how the google search is carried out.

Each search query is served in the same way, your requests are sent to web servers which send the same to index servers and finally the doc servers sends you back the results and all these process takes a fraction of a second.

How is google search done?


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3 Readers responded to this post

this is a very simple and nice way to put it… very nice!

Are you talking about Google Web Search alone? Or is it the case with Google Apps and their other services as well?

Even for search there are additional steps introduced of late. For example, while parsing the query in parallel to getting search results, it also queries Google Apps for relevant searches. For example, type in “25 x 13 =” or “10 US dollars in Indian rupees” in Google search and enter. Relevant Google apps will be running along with indexed search results.

Another stage is when actually ad serving happens.

Thanks for sharing anyway.


@Ajith Edassery

This is the very basic step by step procedure, and there are many more advanced ones. Of course this is the foundation for all search engines. Different search engines will carry over other steps [best example being chacha which adds human support feature] as features. Well you have added a lot to the discussion. Thank you :)

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About The Author

    Pavan Kumar

    Pavan Kumar completed Engineering in Electronics and Communication in the year 2008. He is very enthusiastic and keen to work on different aspects of computer, internet and mobile related fields. The articles here reflect his creativity. This blog was started as a showcase of solutions for different problems and today it has got a good reputation in the blogosphere. Read More...

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