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Software Fortresses: Modeling Enterprise Architectures by Janet Van Sickler, Roger Sessions

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10.1. Presentation Fortresses

Presentation fortresses receive HTTP requests from thin clients and deliver HTML pages in response. This simple-sounding task is complicated by numerous factors, most prominently these:

  • Determining exactly what the client did (push a button? choose a menu item?) is often a nontrivial programming task.

  • Managing the client's state—in other words, determining how the client's current request relates to previous requests from that same client—is often done in ways that severely restrict later scalability.

  • Creating the best possible client experience regardless of client device often requires device-specific code that is difficult to maintain.

  • Planning how the presentation fortress will fulfill the client request (e.g., ...

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