Priority Based Service Broker Policy for Fog Computing Environment

With an increase in number of services being provided over the Internet, the number of users using these services and the number of servers/Datacentres providing the services have also increased. The use of Fog Computing enhances reliability and availability of these services due to enhanced heterogeneity and increased number of computing servers. However, the users of Cloud/Fog devices have different priority of device type based on the application they are using. Allocating the best Datacentre to process a particular user's request and then balancing the load among available Datacentres is a widely researched issue. This paper presents a new service broker policy for Fog computing environment to allocate the optimal Datacentre based on users' priority. Comparative analysis of simulation results shows that the proposed policy performs significantly better than the existing approaches in minimizing the cost, response time and Datacentre processing time according to constraints specified by users.