Data Consistency in Transactional Storage Systems: a Centralised Approach [article]

Shale Xiong, Andrea Cerone, Azalea Raad, Philippa Gardner
<span title="2019-10-04">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
We introduce an interleaving operational semantics for describing the client-observable behaviour of atomic transactions on distributed key-value stores. Our semantics builds on abstract states comprising centralised, global key-value stores and partial client views. We provide operational definitions of consistency models for our key-value stores which are shown to be equivalent to the well-known declarative definitions of consistency model for execution graphs. We explore two immediate
more &raquo; ... tions of our semantics: specific protocols of geo-replicated databases (e.g. COPS) and partitioned databases (e.g. Clock-SI) can be shown to be correct for a specific consistency model by embedding them in our centralised semantics; programs can be directly shown to have invariant properties such as robustness results against a weak consistency model.
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