The systems and methods for tracking goods used for delivery scheduling have been refined.

Abstract

The invention relates to a machine-operated system for scheduling deliveries from a fulfillment center. The system comprises memory for storing instructions and one or more processors configured to execute instructions to perform operations. These operations may include maintaining a primary data structure representing the fulfillment center, wherein this data structure has elements representing parts of the fulfillment center, these parts being linked to multiple physical locations and final times.The operations may also include maintaining a second data structure that includes mapping between physical locations and product identifiers, receiving requests for estimated delivery times, searching the second data structure to identify at least one physical location associated with the requested product, searching the first data structure to determine the last times associated with each location in the list of at least one physical location, and returning the request, the fastest last time selected from the last times.