Learn how Googlebot fetches a page and gives the Google indexer the full text of the pages in this article from Atul Davare. All the elements of a Google results page are explained as well as the ins and outs of cached pages and how you can specify your preferences.
Introduction
In the world of World Wide Web, there can hardly be anyone who is unaware of the best and the fastest search engine, Google. It’s incredibly fast, showing search results with detailed information in milliseconds. There are many search engines all over the WWW, but Google has created a distinct reputation for itself with its easy search facilities and comprehensive results that provide lots of related information at an awesome speed. Let's learn more about Google, how it works and its different features.
How Google Works
Google consists of three distinct parts, each of which is run on a distributed network of thousands of low-cost computers and can therefore carry out fast parallel processing. Parallel processing is a method of computation in which many calculations can be performed in parallel, or at the same time, significantly speeding up data processing. The three parts of Google are:
The web crawler or spiders, known as Googlebot, finds and fetches web pages.
The indexer which, as its name implies, indexes every word on every page and stores the resulting index of words in a huge database.
The query processor compares your search query to the index and recommends the documents that it considers most relevant.
Google Optimization 
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