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xxHash Alternatives
Similar projects and alternatives to xxHash
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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PostgreSQL
Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
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Redis
For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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1brc
1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java
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xxh
🚀 Bring your favorite shell wherever you go through the ssh. Xonsh shell, fish, zsh, osquery and so on.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better xxHash alternative or higher similarity.
xxHash discussion
xxHash reviews and mentions
Posts with mentions or reviews of xxHash.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-12-13.
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Show HN: Rain hashes – well designed, simple and fast variable sized hashes
So, questions for people that know more than I: What's up with the 'passing' and 'failing' hashes in SMHasher3?
Specifically, what happened to xxHash[1] to kick it down to the 'failing' category? I'm not certain about SMHasher's testing criteria, but comparing the benchmark numbers posed in Rain vs xxHash show xxH3 rather faster? Not that a have a personally vested intersted in xxHash, but it seems to be a rather widely used (e.g. RocksDB [2]) with a number of implementations - it would be useful to understand the criteria that make it no longer a passing SMHasher3 entry.
[1] https://github.com/Cyan4973/xxHash
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Breaking CityHash64, MurmurHash2/3, wyhash, and more
https://github.com/Cyan4973/xxHash/issues/450
This person's testing has blake3 at 250 cycles for small hashes. It's not a thousand times slower. And for a lot of uses, 250 cycles is plenty fast. That's like one uncached memory access.
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The One Billion Row Challenge in CUDA: from 17 minutes to 17 seconds
> GPU Hash Table?
How bad would performance have suffered if you sha256'd the lines to build the map? I'm going to guess "badly"?
Maybe something like this in CUDA: https://github.com/Cyan4973/xxHash ?
- ETag and HTTP Caching
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Day 64: Implementing a basic Bloom Filter Using Java BitSet api
Examples of fast, simple hashes that are independent enough includes murmur, xxHash, Fowler–Noll–Vo hash function and many others
- Closed-addressing hashtables implementation
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NIST Retires SHA-1 Cryptographic Algorithm
If you're only using the hash for non-cryptographic applications, there are much faster hashes: https://github.com/Cyan4973/xxHash
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Does the checksum algorithm crc32c-intel support AMD Ryzen series 3000 or newer?
I found the benchmark result of AMD ryzen 5950X
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[Study Project] A memory-optimized JSON data structure
But what's the catch, you're thinking ? Well, it is a bit slower than its counterparts when it comes to deserializing (and marginally faster for serializing). To achieve smaller footprint, it uses a few tricks and notably a custom hash table to deduplicate strings. This comes at a cost of course (even when featuring xxHash to speed things up), but keeps the slowdown reasonable (I think).
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What do you typically use for non-cryptographic hash functions?
Non cryptographic hashes has collisions, for example, assume you having content like "abcdefg" which hashed value is "123", in case of weak hash algorithm some other content like "abcdefZ" can also have a hash "123" which basically means such hash function is failed to be unique fingerprint of particular content. BLAKE3 for example can do 6-7Gb/s which make it pretty fast and secure. If your requirement accepts collision with defined error rate, I would advise you to take a look at XXH3 if you need very snappy hash algorithm, which can run at pace or RAM access (30GB/s+), but again, run tests at particular equipment you targeting, may be AES hardware accelerated MeowHash will serve you better.
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A note from our sponsor - InfluxDB
www.influxdata.com | 16 May 2025
Stats
Basic xxHash repo stats
30
9,825
9.0
12 days ago
Cyan4973/xxHash is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of xxHash is C.
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