Decision Workspace
rcurs vs seqmap vs sdd
Side-by-side comparison of Rust crates
40
rcurs
growingv0.2.0
An oxidized RCU implementation
48
seqmap
experimentalv0.1.4
A blazing fast seqlock-based concurrent hashmap where every data cell is its own seqlock, suitable for thousands of concurrent readers and writers
66
sdd
stablev4.7.5
Scalable lock-free delayed memory reclaimer
Core Metrics
| rcurs | seqmap | sdd | |
|---|---|---|---|
| Health Score | 40 | 48 | 66 |
| Total Downloads | 2.6K | 2.0K | 53.1M |
| 30d Downloads | 5 | 7 | 5.9M |
| Dependents | 0 | 0 | 164 |
| Releases | 2 | 5 | 62 |
| Last Updated | 574d ago | 281d ago | 12d ago |
| Age | 2y 2m | 9m | 1y 11m |
Health Breakdown
rcurs
Maintenance
4
Quality
17
Community
5
Popularity
4
Documentation
10
seqmap
Maintenance
14
Quality
14
Community
3
Popularity
4
Documentation
13
sdd
Maintenance
18
Quality
13
Community
12
Popularity
8
Documentation
15
Technical Details
| rcurs | seqmap | sdd | |
|---|---|---|---|
| Version | 0.2.0 | 0.1.4 | 4.7.5 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | Apache-2.0 |
| Dependencies | 1 | 3 | 3 |
| Crate Size | 6KB | 15KB | 53KB |
| Features | 2 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 38.7% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | — | — | 1.85.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •sdd leads with a health score of 66/100, but none of the options score above 80.
- •sdd is depended on by 164 crates — strongest ecosystem trust.
- •⚠ rcurs has not been updated in over a year.
- •rcurs, seqmap are pre-1.0 — API may change.