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- W4307193708 abstract "Motivated by applications of distributed storage systems to cloud-based key-value stores, the multi-version coding problem has been recently formulated to efficiently store frequently updated data in asynchronous decentralized storage systems. Inspired by consistency requirements in distributed systems, the main goal in multi-version coding is to ensure that the latest possible version of the data is decodable, even if the data updates have not reached some servers in the system. In this paper, we study the storage cost of ensuring consistency for the case where the data versions are correlated, in contrast to previous work where data versions were treated as being independent. We provide multi-version code constructions that show that the storage cost can be significantly smaller than the previous constructions depending on the degree of correlation between the different versions of the data. Our achievability results are based on Reed-Solomon codes and random binning. Through an information-theoretic converse, we show that our multi-version codes are nearly-optimal in certain regimes." @default.
- W4307193708 created "2022-10-29" @default.
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- W4307193708 date "2018-10-02" @default.
- W4307193708 modified "2023-10-17" @default.
- W4307193708 title "Harnessing Correlations in Distributed Erasure Coded Key-Value Stores" @default.
- W4307193708 doi "https://doi.org/10.48550/arxiv.1810.01527" @default.
- W4307193708 hasPublicationYear "2018" @default.
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