Learn Ethical Hacking - No More a Secret

To feed the Google index base, robots, called "bots" on pages regularly patrol the Internet looking for new links, enabling them to discover new pages will be added to the Google index.

In addition, Google also provides a database archive, called "cache". When a website is inaccessible, for example, or a page has been deleted from a website, you can still access them through the cache function of Google search results.

"The" Google bots " are programs, hosted on Google servers, which run through the web pages in search of new content, new links. The passage of these "bots" is called "Google dance".

"The Google index is based on information fed back by "bots". Google is the search engine with the largest index in the world (several billion pages: see http://www.worldwidewebsize.com/ ). For each page indexed, Google combines similar content, and calculates each field poiur a PR (Page Rank), a formula partially guarded secret by the publisher. This is the position of PR which allows positioning the pages in the results of a Google search.

"Cache: For each page covered, Google keeps its database of "cache" 101k of text data (also HTML, DOC, PDF, PPT, ...)

"The Google API is a small external program offered by Google, and allows developers to integrate functionality of remote interrogation of the search engine. To use, you must have a free license key (supplied by Google). Each key can query 1000 searches per day.

- Saba