A method and system for dynamic distributed data caching is presented. The method includes providing a cache community comprising at least one peer. Each peer has an associated first content portion indicating content to be cached by the respective peer. A client may be allowed to join the cache community. A peer list associated with the cache community is updated to include the client. The peer list indicates the peers in the cache community. A respective second content portion is associated with each peer based on the addition of the client.