A server services client requests in an improved manner by a utilizing a combination of sending an id of the last article that has been previously sent to the client, load balancing servers to provide efficient servicing of clients and providing redundant servers so that a failure of any one server does...http://www.google.com/patents/US6173311?utm_source=gb-gplus-sharePatent US6173311 - Apparatus, method and article of manufacture for servicing client requests on a network
