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P2P systems can be used to form a low latency decentralized data delivery system. Structured P2P systems provide both low latency and excellent load balance with uniform query and data distributions, however, in the real application environment, requests distributions are often skewed and follow a Zipf law, some objects will become hotspots, individual nodes are easily overloaded, resulting in poor...
Bamboo is one structured P2P overlay, that likes others (e.g. Chord, Kademlia, Pastry), organizes peers into a flat overlay network and offers distributed hash table (DHT) functionality. It is very promising for its efficient routing performance. However, one disadvantage impeding the DHT algorithm popularity is the routing information maintenance overhead; it generates considerable network traffic...
Both SIP and various peer-to-peer protocols have been widely deployed, there is little operational experience with SIP using overlay networks. Also, some researches have proposed to leverage peer-to-peer computing to control multimedia sessions in a decentralized manner (P2PSIP) [1]. However, most proposals in research only focused on the design of P2PSIP protocols using one specific DHT overlay....
The peer-to-peer network has been widely used to share large files anonymously. Because of its open nature, nodes can join and leave peer-to-peer networks freely. But there are few limited methods to ensure their trust. Malicious nodes can expose great security threats to peer-to-peer networks such as spreading unauthentic data and viruses. But handling all the malicious nodes in the same way causes...
NAT (network address translation) are widely used to isolate the private networks from internet. Unfortunately, NATs block the data transmitted directly between two nodes under different private networks in many peer-to-peer applications. A protocol, STUN (simple traversal of UDP over NATs), has been proposed by IETF to solve the problem, but it costs great network bandwidth and transmission delays...
The critical issue that confronts peer-to-peer networks is the efficient location of the node that stores a desired data item. Chord is a successful resource location protocol based on distributed hash table. However, if the desired data item is stored on a node that is count-clockwise close to the query node on the chord ring, the lookup latency might be high because of its clockwise lookup strategy...
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