What is the key to delivery?

In the case of a certain number of delivery personnel, there is a problem in planning the order of picking up and delivering goods, that is, let a delivery staff try to pick up goods from the same restaurant or try to deliver goods from one place. At present, the take-away mode still stays at the stage when the delivery staff takes the goods from a designated restaurant and delivers them to different targets. I think a better way of planning is to take goods from different homes and send them to the same place. Because the current catering industry is relatively concentrated, concentrated in shopping malls or a certain street. The cost of picking up goods at different homes is relatively low, while the location distribution of the ordering people is relatively random. Such a system requires relatively high calculation of delivery. How to calculate the completion progress of take-out between different stores, pick up the goods in turn and distribute them to different deliverymen going to different locations at the same time is the biggest challenge.