K2+: A Multi-Region OLTP Database with Disaggregated Storage for High Availability and Strong Consistency
Summary: K2+ is a multi-region OLTP key-value store that decouples compute and storage via region-local pools and independent commit logs. Independent partition management and cross-region replication enable dynamic split/merge/replacement while preserving strong consistency and availability. (summarized by gpt-5.6-luna on Aug 28 2026)
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Authors
- 1. Haoze Song (University of Hong Kong)
- 2. Guoli Wei (University of Science and Technology Beijing)
- 3. Xusheng Chen (Huawei)
- 4. Yazhi Feng (Huawei)
- 5. Xieyun Fang (Huawei)
- 6. Yong Men (Huawei)
- 7. Hao Feng (Huawei)
- 8. Yongkun Li (University of Science and Technology Beijing)
- 9. Heming Cui (University of Hong Kong)
BibTeX Citation
@article{song_vldb26,
title = {{K2+: A Multi-Region OLTP Database with Disaggregated Storage for High Availability and Strong Consistency}},
author = {Song, Haoze and Wei, Guoli and Chen, Xusheng and Feng, Yazhi and Fang, Xieyun and Men, Yong and Feng, Hao and Li, Yongkun and Cui, Heming},
journal = {PVLDB},
series = {{VLDB} '26},
volume = {19},
number = {12},
pages = {3860--3873},
doi = {10.14778/3827998.3828001},
url = {https://doi.org/10.14778/3827998.3828001},
year = {2026}
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