Peter Deutsch's Eight Fallacies

Picked this up from digg.com

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The eight fallacies of distributed computing
By Peter Deutsch
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Essentially everyone, when they first build a distributed application, makes this eight assumptions.
All prove to be false in the long run and all cause big trouble and painful learning experiences.

1. The network is reliable
2. Latency is zero
3. Bandwidth is infinite
4. The network is secure
5. Topology doesn't change
6. There is one administrator
7. Transport cost is zero
8. The network is homogeneous