A Novel Data Consistency Algorithm of Mobile E-Commerce

Data consistency is an important problem for mobile e-commerce networks. Based on the analysis of traditional algorithms, a novel distributed mobile data consistency algorithm called DCAM is proposed for mobile networks. The algorithm, which is constructed with read/write character and based on the token-asking algorithm, utilizes the Lamport's logical timestamps to ensure the time sequence and the validity of control messages. And it reduces the response delay of mobile networks through message multiplexing and distinguishing read/write operation sets. At last, it makes a trade-off between the message complexity and the response delay. Performance analysis and simulation results show that the algorithm can be accommodated to the requirements of mobile E-commerce networks. Compared with traditional algorithms, it has lower message complexity, shorter response delay and better fairness.