Decision Workspace
file_mmap vs mmap-guard vs various_data_file
Side-by-side comparison of Rust crates
44
file_mmap
growingv0.20.0
memmap file interface library
51
mmap-guard
experimentalv0.2.0
Safe, guarded memory-mapped file I/O for Rust
45
various_data_file
growingv0.18.0
Store a dainary datas in a file. Use mmap, optimize fragments on delete, and reference identical strings.
Core Metrics
| file_mmap | mmap-guard | various_data_file | |
|---|---|---|---|
| Health Score | 44 | 51 | 45 |
| Total Downloads | 66.3K | 483 | 65.6K |
| 30d Downloads | 200 | 483 | 181 |
| Dependents | 478 | 0 | 276 |
| Releases | 48 | 2 | 50 |
| Last Updated | 795d ago | 19d ago | 780d ago |
| Age | 3y 6m | 19d | 3y 6m |
Health Breakdown
file_mmap
Maintenance
7
Quality
9
Community
12
Popularity
6
Documentation
10
mmap-guard
Maintenance
13
Quality
14
Community
6
Popularity
3
Documentation
15
various_data_file
Maintenance
7
Quality
9
Community
13
Popularity
6
Documentation
10
Technical Details
| file_mmap | mmap-guard | various_data_file | |
|---|---|---|---|
| Version | 0.20.0 | 0.2.0 | 0.18.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT/Apache-2.0 | MIT OR Apache-2.0 | MIT/Apache-2.0 |
| Dependencies | 3 | 3 | 1 |
| Crate Size | 7KB | 26KB | 7KB |
| Features | 0 | 0 | 0 |
| Yanked % | 70.8% | 0.0% | 54.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | 1.89 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •mmap-guard leads with a health score of 51/100, but none of the options score above 80.
- •file_mmap has the most downloads (66.3K), suggesting wider adoption.
- •file_mmap is depended on by 478 crates — strongest ecosystem trust.
- •⚠ file_mmap, various_data_file have not been updated in over a year.