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超越TrueTime:使用AugmentedTime改进扳手

超越TrueTime:使用AugmentedTime改进扳手

Andy
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Spanner [1] is Google’s scalable, multi-version, globally-distributed, and synchronously-replicated database. In order to support distributed transactions at global scale, Spanner leverages on a novel TrueTime (TT) API that exposes clock uncertainty. In this paper, we discuss how Spanner’s TT-based approach relates to the concepts of causality and consistent cuts in the distributed systems literature. Then, armed with a better understanding of the tradeoffs made by the TT-based approach, we discuss how to eliminate its shortcomings.
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