Decision Workspace
concurrent-map vs metadata-store vs indextree
Side-by-side comparison of Rust crates
56
concurrent-map
growingv5.0.37
a lock-free linearizable B+ tree
45
metadata-store
growingv0.2.4
A simple store for recoverable metadata that is written in atomic batches.
74
indextree
stablev4.8.1
Arena based tree structure by using indices instead of reference counted pointers
Core Metrics
| concurrent-map | metadata-store | indextree | |
|---|---|---|---|
| Health Score | 56 | 45 | 74 |
| Total Downloads | 429.8K | 6.5K | 2.1M |
| 30d Downloads | 7.1K | 0 | 123.6K |
| Dependents | 58 | 1 | 784 |
| Releases | 55 | 4 | 31 |
| Last Updated | 624d ago | 1039d ago | 55d ago |
| Age | 3y 6m | 2y 10m | 9y 5m |
Health Breakdown
concurrent-map
Maintenance
7
Quality
21
Community
11
Popularity
7
Documentation
10
metadata-store
Maintenance
10
Quality
13
Community
7
Popularity
5
Documentation
10
indextree
Maintenance
15
Quality
23
Community
13
Popularity
8
Documentation
15
Technical Details
| concurrent-map | metadata-store | indextree | |
|---|---|---|---|
| Version | 5.0.37 | 0.2.4 | 4.8.1 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT/Apache-2.0 | MIT |
| Dependencies | 4 | 12 | 3 |
| Crate Size | 30KB | 16KB | 31KB |
| Features | 5 | 0 | 5 |
| Yanked % | 3.6% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2024 |
| MSRV | — | — | 1.85.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •indextree leads with a health score of 74/100, but none of the options score above 80.
- •indextree is depended on by 784 crates — strongest ecosystem trust.
- •⚠ concurrent-map, metadata-store have not been updated in over a year.
- •metadata-store is pre-1.0 — API may change.