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Just saw this pass by on Hacker News: https://blog.jasony.me/system/cache/2023/08/01/s3fifo. Seems interesting. I wonder if it outperforms (not just in hit ratio, but also CPU time to calculate whethe…
aktau updated
3 months ago
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## Description
Make [Shared Cache](https://ydb.tech/docs/en/concepts/glossary#shared-cache) concurrent (better lock-free).
**This improvement opens us the possibility of making DataShard reads i…
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## Motivation
the S3-FIFO and SIEVE both have O(N) of worst-case time-complexity.
There are many discussion around here to improve this.
refer. https://discuss.systems/@tobinbaker/111660148137611…
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- test runtime on pypy is not great, this *might* be because of pure-python pyyaml being slow, #206 would probably help rule that out (or in)
- graal was added commented to GHA, but was even slower t…
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Hi there,
Our team (@1a1a11a) has developed a new cache eviction algorithm, called SIEVE. It’s simple, efficient, and scalable.
**Why SIEVE could be a great addition**:
- **Simplicity**: Integr…
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### Motivation
This brings an opportunity to replace LRU cache with a better eviction algorithm.
### Paper Abstract
As a cache eviction algorithm, FIFO has a lot of attractive properties, such as…
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on correctness:
The frequencies inside the fifos is never updated (only the one in the hashmap is), but these frequencies are the only one used to determine whether an entry should be pushed back int…
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#59 Related to this PR, the regexp package is very slow.
I suggest creating an interface and changing it so that processing related to regular expressions can be injected externally as a dependency.
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### Purpose
Integrate S3-FIFO algorithm as the primary cache. The golang implementation supports lock-less access to the cache which will greatly improve concurrent performance. See #15
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I wrote a demo for otter, and its results puzzled me.
Otter uses the S3 FIFO eviction strategy, which works as shown in the following gif:
![s3fifo_diagram](https://github.com/maypok86/otter/asse…