Decision Workspace
flashmap vs chashmap vs leapfrog
Side-by-side comparison of Rust crates
47
flashmap
growingv0.2.0
A lock-free eventually consistent concurrent hash map.
58
chashmap
growingv2.2.2
Fast, concurrent hash maps with extensive API.
57
leapfrog
growingv0.3.3
A fast, lock-free concurrent hash map
Core Metrics
| flashmap | chashmap | leapfrog | |
|---|---|---|---|
| Health Score | 47 | 58 | 57 |
| Total Downloads | 37.2K | 2.2M | 26.2K |
| 30d Downloads | 1.2K | 123.5K | 1.4K |
| Dependents | 2 | 598 | 9 |
| Releases | 7 | 12 | 10 |
| Last Updated | 47d ago | 2585d ago | 4d ago |
| Age | 3y 9m | 9y 1m | 4y 1m |
Health Breakdown
flashmap
Maintenance
13
Quality
12
Community
7
Popularity
5
Documentation
10
chashmap
Maintenance
4
Quality
20
Community
15
Popularity
8
Documentation
11
leapfrog
Maintenance
17
Quality
16
Community
9
Popularity
5
Documentation
10
Technical Details
| flashmap | chashmap | leapfrog | |
|---|---|---|---|
| Version | 0.2.0 | 2.2.2 | 0.3.3 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 4 | 2 | 7 |
| Crate Size | 35KB | 15KB | 53KB |
| Features | 3 | 0 | 3 |
| Yanked % | 14.3% | 0.0% | 0.0% |
| Edition | 2024 | — | 2021 |
| MSRV | — | — | — |
| Owners | 1 | 3 | 1 |
Links
Quick Verdict
- •chashmap leads with a health score of 58/100, but none of the options score above 80.
- •chashmap is depended on by 598 crates — strongest ecosystem trust.
- •⚠ chashmap has not been updated in over a year.
- •flashmap, leapfrog are pre-1.0 — API may change.