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The Social Network Great Movie Not so great at depicting website-making We will not make Facebook… today What You See When You Look at Facebook • A page • Some information • Dynamic • Links to other pages • Pretty pictures FB Server You JSON XMLHttpRequest JavaScript Engine Facebook’s Actual Architecture (BIGPIPE) • Inspired by parallel processor execution • Years of development • PhD-Level Architecture Data Layer And That’s Just the Beginning… • • • • BIGPIPE Hive/Hadoop Mobile infrastructure API and JavaScript SDK • HipHop for PHP • Scribe Logging • … Don’t Be Discouraged! All good websites start somewhere Rome wasn’t built in a day Take more Computer Science classes! Hey, if a Harvard kid can make Facebook… Google App Engine Fast, scalable web deployment service Abstracts data layer, server environment, away Applications can be written in Python or Java(!) Many powerful APIs, extensions, examples Well-documented Network Interface Servers Virtual Machine Virtual Machine Application Code (Python, Java) Memory Datastore Operating System Operating Sandbox How it Works (An Overview) GET (Address Bar) Servlet 1 (JAVA) Servlet 2 (JAVA) Clients POST (Submitted form data) Servlet 3 (JAVA) Our Basic Architecture Template 1 (HTML/CS S) Template 2 (HTML/CS S) Template 3 (HTML/CS S) The Next Big Google App! Let’s build a group note repository People will be able to go to the site and see what notes have been posted People will be able to create their own and edit anyone’s Only an administrator can delete a note Lab Part 2…? Add the ability to specify which class and sort by class Add the ability to specify school and sort by school Add the ability to do rich text editing Add the ability to log in …?