Chapter 22. Background Processing
Waiting for railsapplication.com...
On the web, your users find out that your application is working at exactly one time—when your program responds to a request. The classic example of this is credit card processing. Which would you prefer to use: a site that says “Now processing your transaction” alongside a soothing animation, or one that shows a blank page?
In addition to such user experience situations, your application may have requirements that simply cannot be satisfied in a few seconds. Perhaps you run a popular site that allows users to upload video files and share them with others. You’ll need to convert various types of video content into Flash. ...
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