Decision Workspace
double-checked-cell vs double-checked-cell-async vs once_map
Side-by-side comparison of Rust crates
50
double-checked-cell
growingv2.1.0
A thread-safe lazily initialized cell using double-checked locking
46
double-checked-cell-async
growingv2.0.2
A thread-safe lazily initialized cell using double-checked locking
58
once_map
growingv0.4.23
Single assignment and lazy maps
Core Metrics
| double-checked-cell | double-checked-cell-async | once_map | |
|---|---|---|---|
| Health Score | 50 | 46 | 58 |
| Total Downloads | 50.7K | 41.5K | 789.6K |
| 30d Downloads | 165 | 1.6K | 65.5K |
| Dependents | 43 | 47 | 153 |
| Releases | 8 | 1 | 29 |
| Last Updated | 1931d ago | 2245d ago | 183d ago |
| Age | 8y 4m | 6y 1m | 3y 9m |
Health Breakdown
double-checked-cell
Maintenance
6
Quality
21
Community
9
Popularity
6
Documentation
8
double-checked-cell-async
Maintenance
1
Quality
19
Community
11
Popularity
6
Documentation
9
once_map
Maintenance
11
Quality
13
Community
12
Popularity
7
Documentation
15
Technical Details
| double-checked-cell | double-checked-cell-async | once_map | |
|---|---|---|---|
| Version | 2.1.0 | 2.0.2 | 0.4.23 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | MIT/Apache-2.0 | MIT/Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 4 | 5 | 7 |
| Crate Size | 10KB | 10KB | 16KB |
| Features | 3 | 0 | 5 |
| Yanked % | 0.0% | 0.0% | 10.3% |
| Edition | — | 2018 | 2021 |
| MSRV | — | — | 1.65 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •once_map leads with a health score of 58/100, but none of the options score above 80.
- •once_map is depended on by 153 crates — strongest ecosystem trust.
- •⚠ double-checked-cell, double-checked-cell-async have not been updated in over a year.
- •once_map is pre-1.0 — API may change.