Abstract: P2P network makes computing and data transmission efficient and convenience. Nowadays, most of studies focus on routing algorithms and structured topology of the network. However they ignore the research in unstructured decentralized P2P network's replication mechanism. We focused on the area and proposed a new mechanism called Junction Replication Method (JRM) in unstructured decentralized P2P network. With the method, we can achieve better load-balancing by reducing information flow. At last, the paper gave the pseudo code of the algorithm and proven the advantage by deduction.

Key words: Replication, Unstructured, Supernode, Junction, Load-balancing