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Top 10 Rust Concurrent Projects
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Project mention: ToyDB rewritten: a distributed SQL database in Rust, for education | news.ycombinator.com | 2025-05-11
Maybe consider sled? https://github.com/spacejam/sled
It's been abandoned for some years, the author was working on a new engine for it and in the last 5 days they started working again on sled proper. However, it's pretty good the way it is (the 0.34.7 release from 2021 https://crates.io/crates/sled), despite the beta warnings
More info here https://dbdb.io/db/sled
(Note, non affiliated to the author, just liked the project)
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stretto
Stretto is a Rust implementation for Dgraph's ristretto (https://github.com/dgraph-io/ristretto). A high performance memory-bound Rust cache. (by al8n)
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Project mention: Show HN: Whirlwind – Async concurrent hashmap for Rust | news.ycombinator.com | 2024-11-05
Looks interesting! We used quick-cache [1] for that purpose right now, might be interesting to add comparison with those types of Key-Value caching crates.
[1] https://github.com/arthurprs/quick-cache
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possum
concurrent disk-backed cache supporting efficient direct file I/O, transactions, and snapshots using file cloning and sparse files
https://github.com/anacrolix/possum
concurrent disk-backed cache supporting efficient direct file I/O, transactions, and snapshots using file cloning and sparse files
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rc_event_queue
VecDeque-like fast, unbounded, mpmc/spmc concurent FIFO message queue. Lockless reads, write-lock writes.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Rust Concurrent discussion
Rust Concurrent related posts
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Sled: An Embedded Database in Rust
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Copy-on-Write on APFS
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SableDb – a key/value store that uses RocksDB and Redis API (written in Rust)
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RFC: redb (embedded key-value store) nearing version 1.0
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dashmap VS scalable-concurrent-containers - a user suggested alternative
2 projects | 13 Apr 2023 -
Samsara, a safe Rust concurrent cycle collector
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Ask HN: Serverless” key value store with transactions?
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A note from our sponsor - SaaSHub
www.saashub.com | 18 Jun 2025
Index
What are some of the best open-source Concurrent projects in Rust? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | sled | 8,512 |
| 2 | dashmap | 3,498 |
| 3 | stretto | 419 |
| 4 | r3bl-open-core | 368 |
| 5 | quick-cache | 242 |
| 6 | possum | 104 |
| 7 | sharded | 35 |
| 8 | rust-canteen | 31 |
| 9 | rc_event_queue | 21 |
| 10 | scherben-map.rs | 3 |
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