This document summarizes key features of the social networking site Facebook, including personal profiles, friend lists, photo sharing, privacy settings, chat, notifications, events, fan pages, and other apps. It also analyzes common design patterns in Facebook such as abstract factory, builder, prototype, composite, decorator, proxy, chain of responsibility, iterator, command, mediator, observer, state, and strategy.

1. By:
Afsheen Nawaz
Durr-e-Najaf
&
Farah Malik

2.  Social Networking site
 Personal Profile-wall, news feed
 Friend list
 Photos-share, tag
 Privacy settings-photos, timeline posts etc
 Facebook chat
 Search
 Notifications-friends updates
 Events
 Fan pages
 Other apps

3. Pattern Scenario In Facebook
Abstract Factory Different Interface of Facebook for Mobile devices
and Web Browser
Builder Share (Video, Image, Link, Status)
Prototype • Profile Picture from Album
• Messages
Composite Photos and Sub albums
Decorator • Photo tagging and adding Information
• Cover photo at timeline
Proxy • Photo View
• Links on Facebook
Chain of Access of facebook.com
Responsibility

4. Pattern Scenario In Facebook
Iterator Friend Search in Facebook
Search in Facebook
Command Inbox Message Archive/Uarchive
Mediator Facebook Groups
Observer Facebook Notification
State Facebook Chat Status
Strategy Privacy Settings