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Sphinx: A Succinct Perfect Hash Index for x86

Summary: Sphinx reengineers succinct perfect hashing for x86, combining rank/select-friendly encoding with metadata for near-instant common-slot decoding. Its expandable, parallel design halves query/update latency and memory versus prior ~4-bit-per-key indexes. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID
14244
Venue
VLDB
Year
2025
Pagerank
5.2634238e-05
Overall Rank
9,467 | 35.05%
DOI
10.14778/3749646.3749703

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{maghrebi_vldb25,
        title = {{Sphinx: A Succinct Perfect Hash Index for x86}},
        author = {Maghrebi, Sajad Faghfoor and Dayan, Niv},
        journal = {PVLDB},
        series = {{VLDB} '25},
        volume = {18},
        number = {11},
        pages = {4424--4437},
        doi = {10.14778/3749646.3749703},
        url = {https://doi.org/10.14778/3749646.3749703},
        year = {2025}
}

Incoming Citations (Sorted by Pagerank)

Showing 2 of 2 citing papers.

Rank Citing Paper Year Venue Pagerank
10,225 Dynamic Flat Filter: A Unified Framework for Scalable and Stable Fingerprint-Based Filters 2026 SIGMOD 5.093636e-05
10,307 Zeno Filter: To Infinity in Tiny Steps 2026 SIGMOD 5.093636e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 22 of 22 cited papers.

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

Rank Cited Paper Year Venue Pagerank
614 Faster: A Concurrent Key-Value Store with In-Place Updates 2018 SIGMOD 0.00015720975
789 Don't Thrash: How to Cache Your Hash on Flash 2012 VLDB 0.0001401724
857 SlimDB: A Space-Efficient Key-Value Storage Engine For Semi-Sorted Data 2017 VLDB 0.00013568886
967 FlashStore: High Throughput Persistent Key-Value Store 2010 VLDB 0.0001291715
1,368 Dash: Scalable Hashing on Persistent Memory 2020 VLDB 0.00011003184
1,677 SkimpyStash: RAM Space Skimpy Key-Value Store on Flash-based Storage 2011 SIGMOD 0.00010032149
1,975 Morton Filters: Faster, Space-Efficient Cuckoo Filters via Biasing, Compression, and Decoupled Logical Sparsity 2018 VLDB 9.3645236e-05
2,043 A General-Purpose Counting Filter: Making Every Bit Count 2017 SIGMOD 9.2674387e-05
2,805 LogBase: A Scalable Log-structured Database System in the Cloud 2012 VLDB 8.1044134e-05
3,089 Improving Flash Write Performance by Using Update Frequency 2013 VLDB 7.7686638e-05
3,510 Performance-Optimal Filtering: Bloom Overtakes Cuckoo at High Throughput 2019 VLDB 7.3561488e-05
3,798 Vector Quotient Filters: Overcoming the Time/Space Trade-Off in Filter Design 2021 SIGMOD 7.1165678e-05
4,632 LogStore: A Cloud-Native and Multi-Tenant Log Database 2021 SIGMOD 6.5938641e-05
4,960 InfiniFilter: Expanding Filters to Infinity and Beyond 2023 SIGMOD 6.4280133e-05
5,449 Aerospike: Architecture of a Real-Time Operational DBMS 2016 VLDB 6.2144811e-05
6,086 Plush: A Write-Optimized Persistent Log-Structured Hash-Table 2022 VLDB 5.9817424e-05
6,416 Memento Filter: A Fast, Dynamic, and Robust Range Filter 2024 SIGMOD 5.8829474e-05
7,287 Is Perfect Hashing Practical for OLAP Systems? 2024 CIDR 5.6544795e-05
7,776 Aleph Filter: To Infinity in Constant Time 2024 VLDB 5.5464036e-05
8,082 Pea Hash: A Performant Extendible Adaptive Hashing Index 2023 SIGMOD 5.4915503e-05
8,892 Adaptive Quotient Filters 2024 SIGMOD 5.3505412e-05
9,481 The End of Moore’s Law and the Rise of The Data Processor 2021 VLDB 5.2634238e-05
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