Data Transfer Evaluation of Nomadic Data Consistency Model for Large-Scale Mobile Systems (Special Issue on Internet Technology and Its Applications)

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The optimistic consistency scheme has been established with respect to data consistency and availability in distributed systems. The nomadic data consistency model using version vectors to support data versioning for data synchronization and concurrent conflict detection is suitable for an optimistic replication system that, support large-scale wireless networks. This paper describes the architecture and its data consistency model using data versioning and its access domain control targeted for nomadic data sharing systems, such as collaborative works using database and messaging, and the data transfer optimizations of the model. We evaluate our data versioning scheme comparing with a traditional data versioning and the data transfor optimization by estimation and measurement assuming a mobile worker's job. We generate arithmetic formulas for data transfer estimation using the optimizing techniques and apply them to large-scale data sharing configurations in which collaboration groups are dynamically formed and data is exchanged in each group. The data versioning with an access domain increases flexibility in data sharing configurations, such as mobile collaboration systems and client/server type mobile systems. We confirmed that the combination of the general optimizations and the access domain configuration based on our data consistency model is applicable for large-scale mobile data sharing systems.
社団法人電子情報通信学会の論文
1999-04-25

Data Transfer Evaluation of Nomadic Data Consistency Model for Large-Scale Mobile Systems (Special Issue on Internet Technology and Its Applications)

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