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Decentralized Social Networks are proposed to provide more privacy guarantee to the users. They avoid storing data in central servers. The profiles are important and critical objects of this type of network. They are stored in the user’s devices. In order to ensure more availability, every profile is replicated in several devices. The different copies of any given profile stored in different devices are correctly updated with all the writes that happened in any single copy. Since the profiles undergo frequent writes, an important network load is generated during the update process. In this paper, we propose an update model based on the use of a log file to store the writ s. This reduces the size of the data exchanged between the devices storing the same profiles. Simulation results show that the proposed model is globally satisfactory. Subject Categories and Descriptors K.4.2 [Social Issues]; C.2 [COMPUTER-COMMUNICATION NETWORKS]; Open Systems Interconnection reference model General Terms: Social Networks, User Profile, Logs

A Log Based Update of Replicated Profiles in Decentralized Social Networks