What is Queuing Theory | How Queuing Theory Works?

Queuing Theory

What is Queuing Theory | How Queuing Theory Works?

Queuing  Theory

It is annoying to wait in line. Unfortunately, we wait in line at cinemas, shopping malls, fast-food restaurants, banks, and bill payments. We as a customer do not like these waits. This is just because there is more demand for service than there is a facility for service available. Queuing theory attempts to analyze this type of scenario.

Queuing Theory ensures that every component of waiting in line to be served. It is a mathematical study of the delays of waiting in line. It makes decisions on how to create effective workflow systems. There are a lot of real-life scenarios where we apply queuing theory to provide faster customer service like in telecommunications systems were at a time a lot of callers want to use services.

How the Queuing  Theory Works?

Queues happen when users are multiple and resources are limited. It helps to design a balanced system that utilizes the resources and entertains the multiple customers in an effective manner. Generally, it involves the arrival analysis of objects (anything that enter in a queue) at a facility and then it involves the service requirements of that facility. There are six characteristics of the queuing process


  • Arrival Pattern of Customer
  • Service Pattern of Servers
  • Queue discipline
  • System capacity
  • Number of service channels
  • Number of service stages


It is important to know the probability distribution describing the times between customer arrivals. It is also important to know whether customers can arrive simultaneously. After knowing the arrival pattern of customers, most importantly, a probability distribution is needed to describe the sequence of customer service times. After that by knowing queue discipline, system capacity, service channels, and service stages, queuing theory works.

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