1. A machine-implemented method comprising: receiving a request from a client, the request including a requesting entity tag; extracting a starting identifier and an ending identifier from the requesting entity tag, the starting identifier associated with a starting entry and the ending identifier associated with an ending entry; determining whether a subsequent entity tag exists that includes a subsequent starting identifier that matches the requesting entity tag's ending identifier; in response to determining that the subsequent entity tag exists that includes the subsequent starting identifier matching the requesting entity tag's ending identifier, sending the subsequent entity tag and one or more update entries to the client, the update entries corresponding to the subsequent entity tag.