Simulation model of supermarket queuing system

Based on the M/M/1 queuing model and the numbers of goods purchased by each customer, this paper persents a simulation model of supermarket queuing system. We compared two queuing systems under different numbers of goods, one is single-queuing system, the other one is double-queuing system. Then, the optimal cut-off number of goods is developed according to the analysis of economic cost and the optimal casher numbers in both queuing systems. The simulation results show that the double-queuing system further shortens the staying time of customers, significantly reduces the operating cost and improves the operational efficiency of the supermarket.