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Dash: Scalable Hashing on Persistent Memory

Summary: Dash: scalable, dynamic hashing on real byte-addressable persistent memory (Optane DCPMM). Adapts extendible and linear hashing; delivers up to 3.9x throughput, about 90% load factor, and 57 ms instant recovery on 24 cores, outperforming emulation-based approaches. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
h34a7d7c2d9d1403d
Venue
VLDB
Year
2020
Pagerank
0.00010919021
Overall Rank
1,359 | 90.87%
DOI
10.14778/3389133.3389134

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{lu_vldb20,
        title = {{Dash: Scalable Hashing on Persistent Memory}},
        author = {Lu, Baotong and Hao, Xiangpeng and Wang, Tianzheng and Lo, Eric},
        journal = {PVLDB},
        series = {{VLDB} '20},
        volume = {13},
        number = {8},
        pages = {1147--1161},
        doi = {10.14778/3389133.3389134},
        url = {https://doi.org/10.14778/3389133.3389134},
        year = {2020}
}

Incoming Citations (Sorted by Pagerank)

Showing 36 of 36 citing papers.

Rank Citing Paper Year Venue Pagerank
2,510 Viper: An Efficient Hybrid PMem-DRAM Key-Value Store 2021 VLDB 8.3698208e-05
2,866 APEX: A High-Performance Learned Index on Persistent Memory 2022 VLDB 7.9258875e-05
3,581 Understanding the Idiosyncrasies of Real Persistent Memory 2021 VLDB 7.1914474e-05
3,657 Maximizing Persistent Memory Bandwidth Utilization for OLAP Workloads 2021 SIGMOD 7.1244858e-05
4,516 Persistent Memory Hash Indexes: An Experimental Evaluation 2021 VLDB 6.5646895e-05
5,483 Plush: A Write-Optimized Persistent Log-Structured Hash-Table 2022 VLDB 6.1103271e-05
5,758 SSDs Striking Back: The Storage Jungle and Its Implications on Persistent Indexes 2022 CIDR 6.0050738e-05
6,072 Halo: A Hybrid PMem-DRAM Persistent Hash Index with Fast Recovery 2022 SIGMOD 5.8954394e-05
6,077 When Tree Meets Hash: Reducing Random Reads for Index Structures on Persistent Memories 2023 SIGMOD 5.893943e-05
6,236 Optimizing In-memory Database Engine for AI-powered On-line Decision Augmentation Using Persistent Memory 2021 VLDB 5.8409336e-05
6,877 Evaluating Persistent Memory Range Indexes: Part Two 2022 VLDB 5.6581603e-05
6,891 X-SSD: A Storage System with Native Support for Database Logging and Replication 2022 SIGMOD 5.6543315e-05
6,940 The Past, Present and Future of Indexing on Persistent Memory 2022 VLDB 5.63864e-05
7,022 SepHash: A Write-Optimized Hash Index On Disaggregated Memory via Separate Segment Structure 2024 VLDB 5.6190564e-05
7,192 NVM: Is it Not Very Meaningful for Databases? 2023 VLDB 5.5902078e-05
7,333 PetPS: Supporting Huge Embedding Models with Persistent Memory 2023 VLDB 5.5498988e-05
7,760 IcebergHT: High Performance Hash Tables Through Stability and Low Associativity 2023 SIGMOD 5.457277e-05
7,814 Analyzing Vectorized Hash Tables Across CPU Architectures 2023 VLDB 5.4482093e-05
8,241 Pea Hash: A Performant Extendible Adaptive Hashing Index 2023 SIGMOD 5.370431e-05
8,341 DecLog: Decentralized Logging in Non-Volatile Memory for Time Series Database Systems 2024 VLDB 5.3517356e-05
8,642 OptiQL: Robust Optimistic Locking for Memory-Optimized Indexes 2023 SIGMOD 5.2957446e-05
8,660 Cost Modelling for Optimal Data Placement in Heterogeneous Main Memory 2022 VLDB 5.2930333e-05
9,064 A Design Space Exploration and Evaluation for Main-Memory Hash Joins in Storage Class Memory 2023 VLDB 5.2283159e-05
9,324 PerMA-Bench: Benchmarking Persistent Memory Access 2022 VLDB 5.1941411e-05
9,325 Tair-PMem: A Fully Durable Non-Volatile Memory Database 2022 VLDB 5.1941411e-05
9,562 H-Rocks: CPU-GPU accelerated Heterogeneous RocksDB on Persistent Memory 2025 SIGMOD 5.1571823e-05
9,647 Sphinx: A Succinct Perfect Hash Index for x86 2025 VLDB 5.1453267e-05
9,690 FluidKV: Seamlessly Bridging the Gap between Indexing Performance and Memory-Footprint on Ultra-Fast Storage 2024 VLDB 5.1405104e-05
9,727 Tabular: Efficiently Building Efficient Indexes 2025 VLDB 5.1349531e-05
9,728 Outback: Fast and Communication-efficient Index for Key-Value Store on Disaggregated Memory 2025 VLDB 5.1349531e-05
10,569 Focus! Fast On-disk Concurrency-control Using Sketches 2026 SIGMOD 4.9793485e-05
10,629 DART: A Lock-free Two-layer Hashed ART Index for Disaggregated Memory 2026 SIGMOD 4.9793485e-05
10,750 Operation-Aware Hybrid Locking for Modern In-Memory Indexes 2026 VLDB 4.9793485e-05
10,777 Succinct and Fast Tiny Pointer Hash Tables 2026 VLDB 4.9793485e-05
10,783 Garnet: A Next-Generation Cache-Store for Accelerating Applications and Services 2026 VLDB 4.9793485e-05
11,052 SHARD: A Scalable and Resize-optimized Hash Index on Disaggregated Memory 2026 VLDB 4.9793485e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 16 of 16 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

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