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Mobile presence services for large-scale social network services

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The ubiquity of the Internet, mobile devices and cloud computing environments can provide presence-enabled applications, social network applications/services, worldwide. Facebook, Twitter, Foursquare, Google Latitude, buddy cloud and Mobile Instant Messaging (MIM), are examples of presence-enabled applications that have grown rapidly in the last decade. Social network services are changing the ways in which participants engage with their friends on the Internet. They exploit the information about the status of participants including their appearances and activities to interact with their friends. The wide availability of mobile devices (e.g., Smartphones) that utilize wireless mobile network technologies, social network services enable participants to share live experiences instantly across great distances. A mobile presence service is an essential component 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 preference. A scalable mobile presence service is deemed essential for future Internet applications. The services developed by Google and Facebook are spread among as many distributed servers as possible to support the huge number of users worldwide. The Internet, and propose an efficient and scalable server-toserver overlay architecture called Presence Cloud to improve the efficiency of mobile presence services for large-scale social network services. The buddy-list search problem in distributed presence server architecture; the design of PresenceCloud in detail. The complexity analyses of PresenceCloud, the mesh-based scheme and the DHT-based scheme are presented. The performance results of the three approaches are detailed, performance issues related to PresenceCloud, contains some concluding remarks.