Decision Workspace
metrics-observer-json vs foundations vs metrics-exporter-prometheus
Side-by-side comparison of Rust crates
43
metrics-observer-json
growingv0.1.1
A metrics-core compatible observer that outputs JSON.
70
foundations
stablev5.7.4
A Rust service foundations library.
65
metrics-exporter-prometheus
growingv0.18.3
A metrics-compatible exporter for sending metrics to Prometheus.
Core Metrics
| metrics-observer-json | foundations | metrics-exporter-prometheus | |
|---|---|---|---|
| Health Score | 43 | 70 | 65 |
| Total Downloads | 574.1K | 3.0M | 37.2M |
| 30d Downloads | 3.0K | 154.7K | 2.0M |
| Dependents | 6 | 44 | 4.4K |
| Releases | 2 | 42 | 42 |
| Last Updated | 2540d ago | 12d ago | 74d ago |
| Age | 6y 11m | 2y 5m | 6y |
Health Breakdown
metrics-observer-json
Maintenance
3
Quality
14
Community
7
Popularity
7
Documentation
12
foundations
Maintenance
18
Quality
15
Community
16
Popularity
8
Documentation
13
metrics-exporter-prometheus
Maintenance
16
Quality
13
Community
14
Popularity
8
Documentation
14
Technical Details
| metrics-observer-json | foundations | metrics-exporter-prometheus | |
|---|---|---|---|
| Version | 0.1.1 | 5.7.4 | 0.18.3 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | BSD-3-Clause | MIT AND Apache-2.0 |
| Dependencies | 4 | 73 | 23 |
| Crate Size | 6KB | 341KB | 64KB |
| Features | 0 | 25 | 10 |
| Yanked % | 0.0% | 19.1% | 7.1% |
| Edition | 2018 | 2024 | 2018 |
| MSRV | — | — | 1.71.1 |
| Owners | 1 | 5 (team) | 1 |
Links
Quick Verdict
- •foundations leads with a health score of 70/100, but none of the options score above 80.
- •metrics-exporter-prometheus has the most downloads (37.2M), suggesting wider adoption.
- •metrics-exporter-prometheus is depended on by 4.4K crates — strongest ecosystem trust.
- •⚠ metrics-observer-json has not been updated in over a year.
- •metrics-observer-json, metrics-exporter-prometheus are pre-1.0 — API may change.