We often wonder how does this or that happen and such curiosity never leaves our side. While Googling many of us have given thought to how come Google bring back results from our search queries within seconds with millions of pages. Google itself has brought out an infographic that explains just that. It shows how a search query on a site travels 1,500 miles at about the speed of light. It hits various data centers around the world and given back ranked results.
Google has compared web to a book with millions of pages. Just as in a book, there is a glossary of words which are important to the content of the book. Any reader can check out a word in the book just by following the pages which mention it. In the same way, Google has information stored to be recalled at a required time. Going through a book after a glossary check can take time as it is manually done, but for Google, it is all computerized.
It has 100 million gigabytes of data and spends one million computing hours in building the index. After entering a search, Google’s algorithms go through a query travel hundreds of millions of miles per hour and reach different data centers and give back results. This Google algorithm uses more than 200 signals, which check for the freshness of content, URL and title of a webpage, words on a webpage and the quality of the content on a site. Each day, the Google search engine answers 4450 billion new unique queries.
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