Patent ID: 6885672

Claim:
A storage structure implemented on a computer for buffering orders to be provisioned, the storage structure comprising: a plurality of sequentially arranged positions, each position for holding one order at a time, one of the positions being an end position from which an order therein is to be taken up for provisioning, each order in a position being moved to the next sequential position toward the end position as such next sequential position becomes empty and available, the positions being organized into: a first section distal from the end position and including at least one position, the first section for receiving orders from a first order delivery system into a receiving one of the positions thereof; and a second section proximate to the end position and including at least one position, the second section for receiving orders from a second order delivery system into a receiving one of the positions thereof; wherein one of either attempting to receive an order from the second order delivery system while the second section cannot receive the order due to the receiving position thereof already holding an order and attempting to receive an order from the first order deliver system, triggers observing a pre-determined interval prior to attempting to again receive the order.