SOS: A High-Performance Distributed Key-Value Store for Large-Scale Online Services
Summary: SOS is a petabyte-scale distributed KV store guaranteeing at most one disk I/O per operation through a flat hash index, hierarchical variable-size storage, and asynchronous write caching. Strongly consistent chain replication achieves near-memory tail latency on commodity NVMe. (summarized by gpt-5.6-luna on Aug 28 2026)
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Authors
- 1. Yingxin Li (Tencent)
- 2. Kai Liu (Tencent)
- 3. Han Xie (Tencent)
BibTeX Citation
@article{li_vldb26,
title = {{SOS: A High-Performance Distributed Key-Value Store for Large-Scale Online Services}},
author = {Li, Yingxin and Liu, Kai and Xie, Han},
journal = {PVLDB},
series = {{VLDB} '26},
volume = {19},
number = {12},
pages = {4237--4249},
doi = {10.14778/3827998.3828029},
url = {https://doi.org/10.14778/3827998.3828029},
year = {2026}
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Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 234 | TiDB: A Raft-based HTAP Database | 2020 | VLDB | 0.00023765806 |
| 400 | Monkey: Optimal Navigable Key-Value Store | 2017 | SIGMOD | 0.00019129175 |
| 436 | Optimizing Space Amplification in RocksDB | 2017 | CIDR | 0.00018319035 |
| 546 | Faster: A Concurrent Key-Value Store with In-Place Updates | 2018 | SIGMOD | 0.00016590738 |
| 2,089 | FoundationDB: A Distributed Unbundled Transactional Key Value Store | 2021 | SIGMOD | 9.06623e-05 |
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