It depends a lot on how you are currently using the App Engine with Gaelyk. Gaelyk is syntactic sugar on top of the GAE SDK and leans on the shoulders of giant Groovy: the Groovlet servlet and Template servlet are part of Groovy itself, not Gaelyk. Therefore, if you do not rely on various GAE services, you can run your application on any Java container, wherever it is located.
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