Decision Workspace
vsdb_core vs mmdb_core vs fjall
Side-by-side comparison of Rust crates
60
vsdb_core
stablev13.4.6
A std-collection-like database
41
mmdb_core
growingv1.1.1
A std-collection-like database
64
fjall
stablev3.1.4
Log-structured, embeddable key-value storage engine
Core Metrics
| vsdb_core | mmdb_core | fjall | |
|---|---|---|---|
| Health Score | 60 | 41 | 64 |
| Total Downloads | 152.3K | 4.6K | 1.0M |
| 30d Downloads | 24.9K | 0 | 171.2K |
| Dependents | 94 | 11 | 897 |
| Releases | 102 | 3 | 94 |
| Last Updated | 30d ago | 697d ago | 41d ago |
| Age | 3y 11m | 1y 12m | 2y 5m |
Health Breakdown
vsdb_core
Maintenance
17
Quality
12
Community
15
Popularity
6
Documentation
10
mmdb_core
Maintenance
5
Quality
13
Community
9
Popularity
4
Documentation
10
fjall
Maintenance
16
Quality
15
Community
14
Popularity
7
Documentation
12
Technical Details
| vsdb_core | mmdb_core | fjall | |
|---|---|---|---|
| Version | 13.4.6 | 1.1.1 | 3.1.4 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✓ Yes |
| License | MIT | GPL-3.0 | MIT OR Apache-2.0 |
| Dependencies | 8 | 11 | 12 |
| Crate Size | 31KB | 13KB | 82KB |
| Features | 1 | 4 | 5 |
| Yanked % | 34.3% | 100.0% | 41.5% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | — | — | 1.90.0 |
| Owners | 3 | 1 | 1 |
Links
Quick Verdict
- •fjall leads with a health score of 64/100, but none of the options score above 80.
- •fjall is depended on by 897 crates — strongest ecosystem trust.
- •⚠ mmdb_core has not been updated in over a year.