How Google Works.

1. How Google Works
Khalid A. Khan

2. Fast Parallel Processing
Google runs on a distributed network of
thousands of computers and can therefore
carry out fast parallel processing. Parallel
processing is a method of computation in
which many calculations can be performed
simultaneously speeding up data processing.

3. Google has three distinct parts:
 Googlebot, a web crawler that finds and
fetches web pages.
 The indexer that sorts every word on every
page and stores in a huge database.
 The query processor, which gives most
relevant search results.

4. Googlebot
 Googlebot finds pages in two ways:
– through an add URL form
– through finding links by crawling the web.

5. Indexer
 The pages given by Googlebot are stored in
index db sorted alphabetically by search term
with each index entry pointing to list of
documents in which the term appears
 Ignores stopwords such as the, is, on, or, of etc.

6. Query Processor
 The query processor has several parts:
– The user interface (search box)
– The “engine” that evaluates queries and matches
them to relevant documents
– The results formatter etc.

7. Search Results
 Googleconsiders over a hundred factors in
computing a PageRank including:
– Popularity of the page,
– The position and size of the search terms within
the page, and
– the proximity of the search terms to one another
on the page.

8. Query process flow
Search Query
User
Document Server Google Webserver
Index Server

9. Contact Us
Khalid A. Khan is a marketing strategist, advisor, solution provider to emerging
companies and professional speaker on topics including marketing, leadership,
and social media.
Khalid A. Khan, Chairman
Brainchild Business Solutions Pvt. Ltd.
REGUS, RMZ Millenia Business Park
Unit 602A, 4B, 143, MGR Salai
Chennai 600 096
Tel : 0 984 172 9392
Visit us : http://www.brainchildbs.com
Like us : http://www.facebook.com/brainchildmarketingandpr

10. Contact Us
Khalid A. Khan is a marketing strategist, advisor, solution provider to emerging
companies and professional speaker on topics including marketing, leadership,
and social media.
Khalid A. Khan, Chairman
Brainchild Business Solutions Pvt. Ltd.
REGUS, RMZ Millenia Business Park
Unit 602A, 4B, 143, MGR Salai
Chennai 600 096
Tel : 0 984 172 9392
Visit us : http://www.brainchildbs.com
Like us : http://www.facebook.com/brainchildmarketingandpr