CACHING OF DIGITAL CONTENTS IN P2P NETWORKS

摘要

A method for enabling sharing of content files among nodes of a P2P network is provided. The P2P network comprises sub-networks each including a respective plurality of nodes capable of storing content files. Each sub-network has an associated corresponding hash table for indexing the content files stored in the nodes of the sub-network. The hash table is distributed among at least some of the nodes of the sub-network. The method comprises, for each content file stored in at least one node of a sub-network, storing in the hash table associated with the sub-network a criticality index providing an indication of the degree of sharing of the content file among the nodes of the sub-network. The method causes a node to cache at least one content file for sharing with other nodes of the sub-network based on the criticality index of the at least one content file.