Semi-distributed structure of the advantages of performance, scalability can be better, easier management, but the Super-dependent on, easy to be attacked, fault tolerance has also been Yingxiang. The following table compares the four kinds of structural combination of properties, compare the results shown in Table 1-1.
Comparison of standard / center topology topology topology fully distributed unstructured distributed architecture of the whole semi-distributed topology topology
Poor poor good scalability in
Good Good in poor reliability
Maintainability of the best of the best good
Found high in the most efficient algorithm
Support Support does not support complex queries support
Table 1:4 Performance Comparison of types of structure
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