P2P popularity Series 4: semi-distributed architecture

The advantage of the semi-distributed structure is that it has good performance and scalability, and is easy to manage. However, it is highly dependent on super points, vulnerable to attacks, and fault tolerance is also affected. The following table compares the comprehensive performance of the four structures. The comparison results are shown in Table 1-1.

Standard/topology comparison	Centralized topology	Fully Distributed unstructured Topology	Fully Distributed structured Topology	Semi-distributed topology
Scalability	Difference	Difference	Good	Medium
Reliability	Difference	Good	Good	Medium
Maintainability	Best	Best	Good	Medium
FoundAlgorithmEfficiency	Highest	Medium	High	Medium
Complex Query	Supported	Supported