43. A server operative in a computer network for delivering resources to multiple client machines, the server comprising: cache storage; a table listing a plurality of origin servers having content that is authorized for delivery to client machines via the server, wherein the server is associated with a first alias name corresponding to a first origin server of the plurality of origin servers, and wherein the server is associated with a second alias name corresponding to a second origin server of the plurality of origin servers, said second origin server being distinct from the first origin server and said second alias name being distinct from the first alias name, and wherein the server is operable to replicate at least some of the resources located on the first origin server, and at least some of the resources located on the second origin server, and wherein, in response to a request for a resource, the server uses at least the table to analyze an alias name associated with the request to determine an origin server associated with the particular resource.
45. A server as recited in claim 43 , wherein the table further comprises, for each of the listed origin servers, information from the group consisting of: a reflector name and a committed aggregate information rate (CAIR).