sharded
Safe, fast, and obvious concurrent collections in Rust. (by nkconnor)
dashmap
Blazing fast concurrent HashMap for Rust. (by xacrimon)
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| sharded | dashmap | |
|---|---|---|
| 1 | 12 | |
| 30 | 2,717 | |
| - | - | |
| 0.0 | 5.5 | |
| over 1 year ago | 28 days ago | |
| Rust | Rust | |
| Apache License 2.0 | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
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.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
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.
sharded
Posts with mentions or reviews of sharded.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-09-19.
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Memory efficient hashmap?
https://github.com/greg7mdp/parallel-hashmap has a full write up on memory improvements over the equivalent C++. There’s a reference implementation I did in Rust here https://github.com/nkconnor/sharded focused on the concurrency side.
dashmap
Posts with mentions or reviews of dashmap.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-07-07.
- StupidAlloc: what if memory allocation was bad actually
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dashmap VS scalable-concurrent-containers - a user suggested alternative
2 projects | 13 Apr 2023
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Samsara, a safe Rust concurrent cycle collector
The problem is, every single one of these half-dozen crates has at least one known major issue (including UAF), exactly like C++ implementations (which isn't surprising since it's the kind of things where the ownership isn't clear and then the borrow checker can't help us).
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Rust vs Go
Deadlocks and leaks are easy as other languages.
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Shared mutable state is bad... so how do I create a global cache in a multi-threaded app?
Have you considered https://github.com/xacrimon/dashmap ?
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Announcing Leapfrog, a faster concurrent HashMap
Dashmap made some api changes compared to the stdlibs hashmap, which leads to some oddities, as highlighted here: https://github.com/xacrimon/dashmap/issues/175
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Writing a concurrent LRU cache
Some additional notes are in this slide deck and the implementation javadoc. You'd probably want to use something like DashMap for the hash table.
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HashMap-based cache for async programs
You can look at existing concurrent maps like Dashmap https://github.com/xacrimon/dashmap or Cashmap https://gitlab.redox-os.org/redox-os/chashmap
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How does one avoid lock of locks? or use the technique of latch crabbing of databases
Also dashmap
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Noteworthy concurrent data structures?
The only one I've used is Dashmap, it's a concurrent interior-mutability hashmap. Very convenient crate in the case you need that.
What are some alternatives?
When comparing sharded and dashmap you can also consider the following projects:
rust-phf - Compile time static maps for Rust
hashbrown - Rust port of Google's SwissTable hash map