Published at LXer:

You've probably heard the phrase "Write once, run anywhere." But if you want to write for an application that runs in a cloud, you really have to know what you're doing. Here in Part 2 of this "Realities of open source cloud computing" series, learn how to write an application using PHP to run on the Aptana cloud computing platform. Explore some of the critical design differences between a cloud application and a traditional N-tier application. The concepts are illustrated with a seemingly simple application, using familiar open source technologies, that taps into the strengths of cloud computing.

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