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Good Use case of prolog.jsp and epilog.jsp?


Level 2

While learning about Personalization in AEM on Adobe Docs, just the following bullet point is present under the heading, "Content Store and Rendering", about prolog.jsp and epilog.jsp: 

  • prolog.jsp and epilog.jsp: component interaction that allows you to add server side logic before or after the component rendering.

I wanted to know some good use cases for using them. I googled about them, but didn't find anything satisfactory.

Any help is appreciated.


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