Research On Priority-based Efficient Data Synchronization Model With Hybrid Structure

With the development of wireless communication technology and the popularity of mobile intelligent terminals, data synchronization has become a social focus. Due to the deficiencies in synchronization efficiency, network stability and security, traditional synchronization structure based on C/S mode has become increasingly unable to meet the need of future development. In order to solve the problem, a priority-based efficient data synchronization model with hybrid structure named Sync-PH is proposed in this paper.On model structure, a data synchronization model based on hybrid P2 P mode is proposed in this paper. Considering the performance differences in network nodes, the concept of super synchronization node is introduced in this model, which makes full use of the performance of network nodes. In this way, it eases the bottleneck effect in traditional synchronization structure based on C/S mode and improves network stability, making the model above more suitable for mobile computing environment. On the strategy of node role transition and candidate super synchronization node selection, a node priority calculation formula is introduced in this paper. The formula involves multiple factors such as node network efficiency, hardware parameters and network in-out frequency, and malicious nodes can be identified by setting appropriate parameter in the formula. On the maintenance of data consistency, the realization of data consistency based on log technology is discussed in this paper, which gives a detailed description of the issuance, propagation and commitment process of data update. On file synchronization algorithm, an enhanced Rsync algorithm is proposed in this paper. Through setting buffer for sliding window during the sliding window check, the original Rsync algorithm gets optimized.Simulation results indicate that Sync-PH model gets improved in network throughput and stability comparing to traditional synchronization structure based on C/S mode. Besides, file incremental synchronization using the enhanced Rsync algorithm can reduce synchronization time overhead and improve file synchronization efficiency.