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

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9.2. Reliability

Fortress reliability refers to how much I can trust the fortress to be there for me when I need it. There are two types of reliability. There is what I have previously termed pseudoreliability, which means that the fortress appears to be up and running when in reality it is off sucking down doppio macchiatos at Starbucks. This topic I discussed in the chapter on asynchronous drawbridges. The other type of reliability could be described as true reliability.

True reliability means that the fortress is honest to goodness up and running when I ask it to do something. No excuses. No doppio macchiatos. Some people call this availability.

There are two approaches to building true reliability. One is to build the fortress on expensive ...

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