Quality-of-Data for Consistency Levels in Geo-Replicated Cloud Data Stores

Provided by: Instituto Superior Técnico
Topic: Cloud
Format: PDF
Cloud computing has recently emerged as a key technology to provide individuals and companies with access to remote computing and storage infrastructures. In order to achieve highly-available yet high-performing services, cloud data stores rely on data replication. However, providing replication brings with it the issue of consistency. Given that data are replicated in multiple geographically distributed data centers, and to meet the increasing requirements of distributed applications, many cloud data stores adopt eventual consistency and therefore allow running data intensive operations under low latency.

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