When an overlay is composed of heterogeneous nodes, it is unrealistic to expect all nodes to have the ability to store and serve all data. Now, a node may always reject the request to store something. However, the robustness of a peer-to-peer network is affected when a portion of the nodes start running out of storage capability for critical data. Critical data is, of course, quite overlay specific. What qualifies as critical data may actually be different for different overlays.
It is not readily possible for a storing node to tell what type of data it is being requested to store - however, it may be reasonable for overlays to have a guidance on the upper bound on the size of a single data item. This should be configurable for overlays and may even be advertised as part of the overlay configuration. This allows participating nodes to be composed of heterogeneous capabilities and still maintain a reasonable level of robustness in the overlay. Nodes may choose to accept data items larger than this upper bound - however, the data owner must be prepared for a rejection of the store request when the data is larger than the bound. Thoughts? Vidya _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip
