Synchronization and replication model in mobile environment

Focused on the conflict avoidance and reconciliation problem, a new model of synchronization and replication was proposed. The mobile client cached data with two different granularities. Adopting the mode of Subscribe-Cancel-Subscribe, it provided customization caching data. Two synchronization strategies were put forward. Client qualified timestamp was used as the swap strategy to solve the Web content conflict and the pretreatment mode before synchronization to reduce the upload data when the mobile client synchronized with server. The combination of priority and transaction cooperation was done to solve the database conflict. The two methods resolved the issue of the data conflict for this model.