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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
0.00010914954
Overall Rank
1,359 | 90.87%
DOI
10.14778/3389133.3389134
PDF
Download (CC BY-NC-ND 4.0)

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
2,507 Viper: An Efficient Hybrid PMem-DRAM Key-Value Store 2021 VLDB 8.3688413e-05
2,861 APEX: A High-Performance Learned Index on Persistent Memory 2022 VLDB 7.9295281e-05
3,583 Understanding the Idiosyncrasies of Real Persistent Memory 2021 VLDB 7.1881352e-05
3,658 Maximizing Persistent Memory Bandwidth Utilization for OLAP Workloads 2021 SIGMOD 7.1211998e-05
4,515 Persistent Memory Hash Indexes: An Experimental Evaluation 2021 VLDB 6.5624742e-05
5,488 Plush: A Write-Optimized Persistent Log-Structured Hash-Table 2022 VLDB 6.1074346e-05
5,755 SSDs Striking Back: The Storage Jungle and Its Implications on Persistent Indexes 2022 CIDR 6.0030957e-05
6,070 When Tree Meets Hash: Reducing Random Reads for Index Structures on Persistent Memories 2023 SIGMOD 5.8940295e-05
6,074 Halo: A Hybrid PMem-DRAM Persistent Hash Index with Fast Recovery 2022 SIGMOD 5.8926486e-05
6,239 Optimizing In-memory Database Engine for AI-powered On-line Decision Augmentation Using Persistent Memory 2021 VLDB 5.8381685e-05
6,882 Evaluating Persistent Memory Range Indexes: Part Two 2022 VLDB 5.6554818e-05
6,890 X-SSD: A Storage System with Native Support for Database Logging and Replication 2022 SIGMOD 5.652433e-05
6,942 The Past, Present and Future of Indexing on Persistent Memory 2022 VLDB 5.6367484e-05
7,023 SepHash: A Write-Optimized Hash Index On Disaggregated Memory via Separate Segment Structure 2024 VLDB 5.6163964e-05
7,194 NVM: Is it Not Very Meaningful for Databases? 2023 VLDB 5.5875615e-05
7,335 PetPS: Supporting Huge Embedding Models with Persistent Memory 2023 VLDB 5.5472715e-05
7,769 IcebergHT: High Performance Hash Tables Through Stability and Low Associativity 2023 SIGMOD 5.4546936e-05
7,808 Analyzing Vectorized Hash Tables Across CPU Architectures 2023 VLDB 5.448023e-05
7,982 DecLog: Decentralized Logging in Non-Volatile Memory for Time Series Database Systems 2024 VLDB 5.4114146e-05
8,247 Pea Hash: A Performant Extendible Adaptive Hashing Index 2023 SIGMOD 5.3678887e-05
8,649 OptiQL: Robust Optimistic Locking for Memory-Optimized Indexes 2023 SIGMOD 5.2932376e-05
8,669 Cost Modelling for Optimal Data Placement in Heterogeneous Main Memory 2022 VLDB 5.2905276e-05
9,073 A Design Space Exploration and Evaluation for Main-Memory Hash Joins in Storage Class Memory 2023 VLDB 5.2258409e-05
9,333 PerMA-Bench: Benchmarking Persistent Memory Access 2022 VLDB 5.1916822e-05
9,334 Tair-PMem: A Fully Durable Non-Volatile Memory Database 2022 VLDB 5.1916822e-05
9,570 H-Rocks: CPU-GPU accelerated Heterogeneous RocksDB on Persistent Memory 2025 SIGMOD 5.154741e-05
9,655 Sphinx: A Succinct Perfect Hash Index for x86 2025 VLDB 5.142891e-05
9,696 FluidKV: Seamlessly Bridging the Gap between Indexing Performance and Memory-Footprint on Ultra-Fast Storage 2024 VLDB 5.1380769e-05
9,732 Tabular: Efficiently Building Efficient Indexes 2025 VLDB 5.1325223e-05
9,733 Outback: Fast and Communication-efficient Index for Key-Value Store on Disaggregated Memory 2025 VLDB 5.1325223e-05
10,580 Focus! Fast On-disk Concurrency-control Using Sketches 2026 SIGMOD 4.9769913e-05
10,640 DART: A Lock-free Two-layer Hashed ART Index for Disaggregated Memory 2026 SIGMOD 4.9769913e-05
10,760 Operation-Aware Hybrid Locking for Modern In-Memory Indexes 2026 VLDB 4.9769913e-05
10,787 Succinct and Fast Tiny Pointer Hash Tables 2026 VLDB 4.9769913e-05
10,793 Garnet: A Next-Generation Cache-Store for Accelerating Applications and Services 2026 VLDB 4.9769913e-05
11,061 SHARD: A Scalable and Resize-optimized Hash Index on Disaggregated Memory 2026 VLDB 4.9769913e-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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