Epoch-based Commit and Replication in Distributed OLTP Databases
Summary: COCO makes epochs—not individual transactions—the atomic commit and synchronous-replication unit, reducing distributed OLTP’s 2PC overhead. Epoch execution enables physical- or logical-time OCC, delivering up to 4× higher YCSB/TPC-C throughput. (summarized by gpt-5.6-luna on Jul 24 2026)
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Authors
- 1. Yi Lu (Massachusetts Institute of Technology)
- 2. Xiangyao Yu (University of Wisconsin)
- 3. Lei Cao (Massachusetts Institute of Technology)
- 4. Samuel Madden (Massachusetts Institute of Technology)
BibTeX Citation
@article{lu_vldb21,
title = {{Epoch-based Commit and Replication in Distributed OLTP Databases}},
author = {Lu, Yi and Yu, Xiangyao and Cao, Lei and Madden, Samuel},
journal = {PVLDB},
series = {{VLDB} '21},
volume = {14},
number = {5},
pages = {743--756},
doi = {10.14778/3446095.3446098},
url = {https://doi.org/10.14778/3446095.3446098},
year = {2021}
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