foil on Section 7.5
Characteristics of distributed systems
* Concurrent execution of components
* Independent failure modes
of the components of a distributed program
of the connections between them
* Concept of global time is meaningless
clocks are not identical
communication takes time
a partial ordering of events is possible
* Inconsistent state
propagation of knowledge of events
consistency of (any) object replicas
related changes to distributed objects
no possibility of quiescent state