Decision Workspace
bumpalo vs bump-scope vs fastarena
Side-by-side comparison of Rust crates
75
bumpalo
stablev3.20.3
A fast bump allocation arena for Rust.
65
bump-scope
stablev2.3.0
A fast bump allocator that supports allocation scopes / checkpoints. Aka an arena for values of arbitrary types.
55
fastarena
experimentalv0.1.3
A zero-dependency, bump-pointer arena allocator with RAII transactions, nested savepoints, optional LIFO destructor tracking, and ArenaVec — built for compilers, storage engines, and high-throughput request-scoped workloads.
Core Metrics
| bumpalo | bump-scope | fastarena | |
|---|---|---|---|
| Health Score | 75 | 65 | 55 |
| Total Downloads | 399.2M | 196.4K | 166 |
| 30d Downloads | 35.2M | 30.0K | 0 |
| Dependents | 9.5K | 13 | 2 |
| Releases | 56 | 87 | 4 |
| Last Updated | 3d ago | 40d ago | 60d ago |
| Age | 7y 6m | 2y 2m | 2m |
Health Breakdown
bumpalo
Maintenance
19
Quality
16
Community
17
Popularity
8
Documentation
15
bump-scope
Maintenance
17
Quality
18
Community
9
Popularity
6
Documentation
15
fastarena
Maintenance
15
Quality
15
Community
7
Popularity
3
Documentation
15
Technical Details
| bumpalo | bump-scope | fastarena | |
|---|---|---|---|
| Version | 3.20.3 | 2.3.0 | 0.1.3 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT |
| Dependencies | 10 | 10 | 3 |
| Crate Size | 99KB | 241KB | 43KB |
| Features | 7 | 19 | 1 |
| Yanked % | 23.2% | 1.1% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | 1.71.1 | 1.85.1 | 1.66 |
| Owners | 2 | 1 | 1 |
Links
Quick Verdict
- •bumpalo leads with a health score of 75/100, but none of the options score above 80.
- •bumpalo is depended on by 9.5K crates — strongest ecosystem trust.
- •fastarena is pre-1.0 — API may change.