How does google search engine works?

Google....search engine how it works?

• How its give the data with in fraction of sec... Where that large amount of data stored?

• Answer:

  HOW SEARCH WORKS From algorithms to answers. PART 1 OF 3 CRAWLING AND INDEXING SEARCH STARTS WITH THE WEB. IT'S MADE UP OF OVER 60 TRILLION INDIVIDUAL PAGES AND IT'S CONSTANTLY GROWING. Google navigates the web by CRAWLING. That means we follow links from page to page. Site owners choose whether their sites are crawled. We sort the pages by their content and other factors. The index includes text from millions of books from several libraries and other partners. "The perfect search engine would understand exactly what you mean and give you back exactly what you want." Larry Page Co-founder & CEO Prefer to watch a video about search? Here you go! Thanks to Street View, we can also include information from the physical world. The Knowledge Graph provides better answers by organizing information about real world people, places and things. It's over 100 million gigabytes. And we keep track of it all in THE INDEX. PART 2 OF 3 ALGORITHMS WE WRITE PROGRAMS & FORMULAS TO DELIVER THE BEST RESULTS POSSIBLE. As you search string theorystring theory ALGORITHMS get to work looking for clues to better understand what you mean. Based on these clues, we pull relevant documents from THE INDEX. We thenRANKthe results We don't accept payment to increase a site's ranking. The most relevant results appear first. using over200 FACTORS. The Search Lab Our algorithms are constantly changing. These changes begin as ideas in the minds of our engineers. They take these ideas and run experiments, analyze the results, tweak them, and run them again and again. EXPLORE THESEARCH LAB All this happens in 1/8th of a second. RESULTS can take a variety of forms: 1 Knowledge Graph Provides results based on a database of real world people, places, things, and the connections between them. 2 Snippets Shows small previews of information, such as a page's title and short descriptive text, for each search result. 3 News Includes results from online newspapers and blogs from around the world. 1 Knowledge Graph Provides results based on a database of real world people, places, things, and the connections between them. 8 Voice Search With the Google Search App, simply say what you want and get answers spoken right back to you. 9 Mobile Includes improvements designed specifically for mobile devices, such as tablets and smartphones. 4 Answers Displays immediate answers and information for things such as the weather, sports scores and quick facts. 5 Videos Shows video-based results with thumbnails so you can quickly decide which video to watch. 6 Images Shows you image-based results with thumbnails so you can decide which page to visit from just a glance. 7 Refinements Provides features like "Advanced Search," related searches, and other search tools, all of which help you fine-tune your search. PART 3 OF 3 FIGHTING SPAM WE FIGHT SPAM 24/7 TO KEEP YOUR RESULTS RELEVANT. The majority of spam removal is automatic. We examine other questionable documents by hand. If we find spam, we take manualACTION. See what we've removed lately See action taken over time See types of spam When we take action, we attempt to NOTIFYthe website owners. See the growth in spam notifications Site owners can FIX their sites and let us know. See how often this happens AND THAT'S HOW SEARCH WORKS. Behind your simple page of results is a complex system, carefully crafted and tested, to support more than one-hundred billion searches each month.