moka
left-right
moka | left-right | |
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4 | 5 | |
1,345 | 1,898 | |
3.0% | - | |
9.3 | 5.6 | |
13 days ago | 8 months ago | |
Rust | Rust | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
moka
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Python deserves a good in-memory cache library!
If you know Caffeine(Java)/Ristretto(Go)/Moka(Rust), you know what Theine is. Python deserves a good in-memory cache library.
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caching, asynchronous, request deduplication - deduplicate 0.3.1
Thanks for the feedback. I am aware of Moka. We used it on a work project but stopped because we had a couple of issues with it. The main one was: https://github.com/moka-rs/moka/issues/154 which I think is fixed now and a smaller issue which was caused by the Quanta crate crashing on AMD chips (also fixed).
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Writing a concurrent LRU cache
Ya, I saw concache but I looked into it and it doesn't implement what is needed. Each bucket has its own linked-list backing (hence "lock-free linked list buckets"). An LRU needs each value in each bucket to be part of one linked list I believe. After posting this I realized my line of research was failing because it was state of the art five years ago. Caffeine replaced `concurrentlinkedhashmap` in the java world (by the same author). A rust version of that is Moka. These are much more complicated than a concurrent LRU but faster (aka more state of the art). Another rust crate is Stretto which is a port of dgraph's Ristretto (in go). The question becomes is it worth it to essentially port `concurrentlinkedhashmap` to have a great concurrent LRU when there are more state of the art caches out there.
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Stretto - a thread-safe, high-performance, high hit-ratio cache.
How does it compare to https://github.com/moka-rs/moka ?
left-right
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SQLite: Wal2 Mode
Very similar to the left-right pattern.
https://github.com/jonhoo/left-right
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I wanna be a crab.
C is much better specified than unsafe Rust. Some things are just not worked out yet in Rust. This may sometimes even bite very experienced devs, such as this issue with Box's aliasing semantics, which tripped up the author of left-right.
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New ScyllaDB Go Driver: Faster Than GoCQL and Its Rust Counterpart
Do you mean this? https://github.com/jonhoo/left-right
I am not sure of the performance or implementation difficulty but the data structure seems to be what you are talking about.
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Is Aliasing through a ManuallyDrop<T> sound?
For an example of aliasing data soundly see the aliasing module from left-right
- Writing a concurrent LRU cache
What are some alternatives?
stretto - Stretto is a Rust implementation for Dgraph's ristretto (https://github.com/dgraph-io/ristretto). A high performance memory-bound Rust cache.
triple-buffer - Implementation of triple buffering in Rust
ristretto - A high performance memory-bound Go cache
bus - Efficient, lock-free, bounded Rust broadcast channel
dashmap - Blazing fast concurrent HashMap for Rust.
rust-memcache - memcache client for rust
evlru - An eventually consistent LRU designed for lock-free concurrent reads
Stretto - Beautiful web-based music player
concurrentlinkedhashmap - A ConcurrentLinkedHashMap for Java
concache - A linked-list based, lock-free concurrent hashmap in Rust.