Analyzation Of The Scalability Problems Of Distributed Presence Server Architectures

A mobile presence service is an important factor of social network services in cloud computing environments. The key function of a mobile presence service is to maintain an up-to-date list of presence information of all mobile users. The presence information includes details about a mobile user’s location, availability, activity, device capability and preferences. The service must also connect the user’s ID to his/her current presence information as well as regain and subscribe to changes in the presence information of the user’s friends. We suggest competent and scalable server architecture, called Presence Cloud which facilitates mobile presence services to hold up large-scale social network applications. When a mobile user joins a network Presence Cloud searches for the presence of his/her friends and notifies them of his/her arrival. Presence Cloud categorizes presence servers into a quorum-based server-to-server architecture for efficient presence searching