A lookup algorithm for P2P-CDN

With the increasing of “resource hungry” applications in Internet, to ensure the client's QoS is a challenge. P2P-CDN is a content distribution network which is a combination technology of P2P and CDN. The edge servers of P2P-CDN form a P2P network to make the collaborations between the edge servers more efficient. However, the lookup algorithm of the traditional P2P network is not appropriate for P2P-CDN. This paper presented a distributed lookup algorithm used in P2P-CDN. By contrast with other algorithms, this algorithm is more efficient.