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Sensors 2018, 18(1), 222; https://doi.org/10.3390/s18010222

Replication Strategy for Spatiotemporal Data Based on Distributed Caching System

School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
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Received: 7 December 2017 / Revised: 5 January 2018 / Accepted: 11 January 2018 / Published: 14 January 2018
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Abstract

The replica strategy in distributed cache can effectively reduce user access delay and improve system performance. However, developing a replica strategy suitable for varied application scenarios is still quite challenging, owing to differences in user access behavior and preferences. In this paper, a replication strategy for spatiotemporal data (RSSD) based on a distributed caching system is proposed. By taking advantage of the spatiotemporal locality and correlation of user access, RSSD mines high popularity and associated files from historical user access information, and then generates replicas and selects appropriate cache node for placement. Experimental results show that the RSSD algorithm is simple and efficient, and succeeds in significantly reducing user access delay. View Full-Text
Keywords: replica; spatiotemporal date; spatiotemporal locality and correlation; distributed cache; smart city replica; spatiotemporal date; spatiotemporal locality and correlation; distributed cache; smart city
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Xiong, L.; Yang, L.; Tao, Y.; Xu, J.; Zhao, L. Replication Strategy for Spatiotemporal Data Based on Distributed Caching System. Sensors 2018, 18, 222.

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