A load balancing technology segregates various inventory types (e.g., potatoes vs. milk, vs. pretzels, vs. tissue paper, etc.) based upon how frequently they are ordered in a distribution center. Inventory types that are ordered at the slowest rate are not “replicated” over multiple pods in the distribution...http://www.google.com/patents/US7370005?utm_source=gb-gplus-sharePatent US7370005 - Inventory replication based upon order fulfillment rates
