Decision Workspace
poly-once vs double-checked-cell-async vs futures-concurrency
Side-by-side comparison of Rust crates
52
poly-once
growingv1.1.0
A thread-safe cell providing async and sync initialization primitives similar to OnceLock
46
double-checked-cell-async
growingv2.0.2
A thread-safe lazily initialized cell using double-checked locking
75
futures-concurrency
stablev7.7.1
Structured concurrency operations for async Rust
Core Metrics
| poly-once | double-checked-cell-async | futures-concurrency | |
|---|---|---|---|
| Health Score | 52 | 46 | 75 |
| Total Downloads | 1.1K | 41.5K | 4.5M |
| 30d Downloads | 4 | 1.5K | 527.9K |
| Dependents | 0 | 47 | 725 |
| Releases | 2 | 1 | 31 |
| Last Updated | 201d ago | 2245d ago | 68d ago |
| Age | 11m | 6y 1m | 4y 7m |
Health Breakdown
poly-once
Maintenance
9
Quality
20
Community
6
Popularity
4
Documentation
13
double-checked-cell-async
Maintenance
1
Quality
19
Community
11
Popularity
6
Documentation
9
futures-concurrency
Maintenance
15
Quality
20
Community
17
Popularity
8
Documentation
15
Technical Details
| poly-once | double-checked-cell-async | futures-concurrency | |
|---|---|---|---|
| Version | 1.1.0 | 2.0.2 | 7.7.1 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✓ Yes |
| License | MIT | MIT/Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 3 | 5 | 14 |
| Crate Size | 24KB | 10KB | 83KB |
| Features | 3 | 0 | 3 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2018 | 2021 |
| MSRV | — | — | 1.81.0 |
| Owners | 1 | 1 | 3 |
Links
Quick Verdict
- •futures-concurrency leads with a health score of 75/100, but none of the options score above 80.
- •futures-concurrency is depended on by 725 crates — strongest ecosystem trust.
- •⚠ double-checked-cell-async has not been updated in over a year.