Google have released a new site called ‘inside search’ which uses a 3 part, info-graphic style pages to explain the amazing technical challenges that searching the internet entails. Google’s search indexes more than 30 trillion pages which contains more than 100 million gigabytes which all builds to an index. The way your able to search the entire web in just 0.25 seconds is that you search across an index, not all the pages.
As you search Google uses sophisticated algorithms to analyse your input and compare it against the relevant items in the index. Each result is given a score based on Google’s secret sauce containing more than 200 herbs and spices including Site & page quality, freshness and users settings like safe search.
With 7 Billion people, it is staggering that more than 3 billion searches are run every day. Your can read the story of Google Search and enjoy the graphics all at http://www.google.com/insidesearch/howsearchworks/thestory/ or check out a video of how Google tweaks their algorithm in the video below.