How does Facebook codes their Cropping tool?

Posted by Trip on Stack Overflow See other posts from Stack Overflow or by Trip
Published on 2010-04-06T16:25:16Z Indexed on 2010/04/06 16:53 UTC
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cropping

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jQuery

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ruby-on-rails

I ask this because I am currently trying to work out my own technique, and there are huge strategic hangups for the entire site when your begin this. Of them are:

Using jCrop and rMagick, it takes up a huge amount of processing ( to which I have backgrounded ).
Because I have it backgrounded, I must by ajax develop a feature that auto-updates every five seconds to check when the backgrounding is done.

Has anyone accomplished this with their sites? If so, what are some creative techniques you came across to keep the processing streamline, and the users happy?

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