1. A system configured to identify peers for clients to facilitate the clients obtaining updates for the clients, the system comprising: one or more processors; one or more computer-readable media coupled to the one or more processors; wherein the one or more processors and one or more computer-readable media are configured to implement a peer determination service, wherein the peer determination service is configured to: receive from the client an identification of a dataset and a specification of one or more byte ranges of the dataset; as a result, identify one or more other clients associated with the one or more byte ranges of the dataset to act as peers to the client; and provide an indication of the one or more of the other identified clients as peers to the client.