Design patterns for social networking site like facebook? [closed]

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开发者_运维百科

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I am interested in understanding the design principals to use to create the backend for a social networking site. I read up a few resources and found that facebook uses a graph as an underlying data structure where each node could be user/page/album etc. However, just that does not give me a top level view (block diagram or class diagram) on how to go about implementing a few basic features like (all using the graph data structure):

1. Adding/removing friends
2. News feed
3. Messaging

Any pointers on any resources would be great. I am also interested in finding out if a design pattern exists for a social networking site.

Please note that I am not looking for any language specific solution

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Have you looked at this StackOverflow Thread

and this and this and this?

Please do a search on SO and you will land with many more! None seem conclusive but that's more to do with the nature of your question!

EDIT: You may find this linked in architecture presentation useful!

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Take a look at Observer Design Pattern, I think it is the base of Twitter, Facebook to publish things at the time line of other people that follow someone.

Maybe these book can help you http://www.designingsocialinterfaces.com/patterns/Main_Page

Here you can find a lot of good information about soial Design Pattern http://developer.yahoo.com/ypatterns/