Want to know how the largest search engine for the internet works? The Google launched on Friday (1) a page showing the backstage of the mechanism research, including information about the indexing of more than 30 trillion web pages, intense combat spam and responsible algorithm to display the most relevant results to the user, which takes into account more than 200 features.
In “page How Search Works” you can find out, for example, that Google’s page index has more than 100 million gigabytes, or 100 petabytes. It does not seem much for a service that needs index trillion pages, but this information (or most of them) are stored in RAM. That’s why the algorithm can search all the content and return the results in just one – eighth of a second.