| In recent years, as the communication technology and the rapid development of Internet technology, and PDA, notebook computer, smart phones and portable devices quickly update, mobile database technology to a wide range of applications. At the same time, is accompanied by a lot of new problems, which the data synchronization copy the process of how to ensure that the data consistency problem is the key point.According to this problem, this paper, from the cache to technology based on data classification and priority data dynamic management strategy to control the cache content. In the process of data cache work online status, broken state and set by the state network connection characteristics are analyzed, and the way of synchronization based on hybrid duplicate copy mechanisms, namely with Lazy copy and Master-slave replication and UpdateAnywhere copy mixture of synchronization mechanism to ensure the consistency of the data. In the process of synchronous data conflict problem, use the conflict to a different according to different types of coordination and rolled back strategies to solve the conflict of the method.Based on the data cache technology research on the basis of analysis, the mixture of synchronous copy modules each part of function and working process of the design and detailed, the author explains the experiment in synchronization mechanism performance to carry on the test, and with the traditional synchronous way of comparison analysis, and verifies the reproduction mode with copy of mixed traffic control mechanism in the operation efficiency and has certain advantages in. |
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