Review on Unstructured Peer-to-Peer Overlay Network Applications

Peer-to-Peer (P2P) network is a distributed computing architecture that allows network devices to share, access files, and folders with everyone or with selected users without requiring separate server computer or server software. This paper reviews different structures of P2P overlay network applications and presents their strengths and weaknesses. It also reviews different data replacement techniques as the scalability characteristic of such networks having a big impact on the memory resources and capacities and may lead to degrading the efficiency.