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On Architecture

Chapter 1, “Introduction to Virtual Worlds,” described the way that virtual world servers are constructed in terms of four different layers of functionality (driver, mudlib, world model, incarnation). This is the breakdown of most interest to designers. However, an understanding of how the rest of the system hangs together is required, at least at an abstract level. That's what's discussed next.

Overall Architecture

Actual architectures differ from developer to developer, but they can almost all be regarded as variations of a single generic approach that emphasizes reliability, scalability, and maintainability. Figure 2.1 illustrates this overall architecture.


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