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Release It! by Michael T. Nygard

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Antipattern4.3 Cascading Failures

The standard system architecture for enterprise systems, including websites and web services, comprises a collection of functionally distinct farms or clusters that are interconnected through some form of load balancing. We usually refer to the individual farms as layers—for example, as in Figure 8, Layers Often Found in Commerce Systems—even though they might not really be a single stack.

images/stability_antipatterns/commerce_layers.png
Figure 8. Layers Often Found in Commerce Systems

In a service-oriented architecture, these look even less like traditional layers and ...

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