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**Relevant system information:**
- "PostgreSQL 12.7 on x86_64-pc-linux-musl, compiled by gcc (Alpine 10.2.1_pre1) 10.2.1 20201203, 64-bit"
- timescaledev/timescale-analytics:nightly
- Running on…
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**The problem/use-case that the feature addresses**
I found the hash function MurmurHash64A is the most hotspot when running benchmark for `pfadd` command.
The benchmark I used is https://github.…
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- [x] HyperLogLog
- [x] HyperLogLog ++
- [x] Count Min Sketch
- [ ] Bloom Filter
- [ ] MinHash
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refer:
https://mp.weixin.qq.com/s?__biz=MjM5ODYwMjI2MA==&mid=2649757129&idx=1&sn=bfbac9fecfcf55b6bff25e59dc96d903&chksm=becc86b289bb0fa4236a0575a0fc7effdfe00c2af90e05be0828a78c0fa21fdab0e741a9237…
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HyperLogLog has an updateInto method which updates a mutable buffer representing its current state, instead of doing immutable operations. This allows for an efficient implementation of sumOption. It …
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I would really interested in unique users. Even approximately.
How about using IP + [HyperLogLog](https://redis.io/docs/data-types/probabilistic/hyperloglogs/)?
That already would be massively b…
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Automatic statistics (delivered in 19.1) can consume a large number of resources and take a large amount of time in certain circumstances. Using the vectorized execution framework for stats can reduce…
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Having a version of the aggregation kernel count distinct using HyperLogLog may be useful.
Note: The implementation should support the merge operator.
cc @ianmcook @lidavidm
Some resources/li…
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One of the main strengths of a competitor database (Elasticsearch), it's their Aggregations Engine/Pipeline. Combines powerful aggregations over large volumes of data with very good response times.
…
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Hi all,
15th of March 2019 I sent a communication, alongside with patches to fix two vulnerabilities in Redis.
1. The HyperLogLog code implementation had insufficient sanity checks, resulting in…