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.
69
foundations
stablev5.5.3
A Rust service foundations library.
63
metrics-exporter-prometheus
growingv0.18.1
A metrics-compatible exporter for sending metrics to Prometheus.
Core Metrics
| metrics-observer-json | foundations | metrics-exporter-prometheus | |
|---|---|---|---|
| Health Score | 43 | 69 | 63 |
| Total Downloads | 562.0K | 2.1M | 26.1M |
| 30d Downloads | 4.5K | 236.3K | 2.7M |
| Dependents | 6 | 29 | 2.3K |
| Releases | 2 | 31 | 40 |
| Last Updated | 2432d ago | 16d ago | 110d ago |
| Age | 6y 8m | 2y 2m | 5y 9m |
Health Breakdown
metrics-observer-json
Maintenance
3
Quality
14
Community
7
Popularity
7
Documentation
12
foundations
Maintenance
18
Quality
15
Community
15
Popularity
8
Documentation
13
metrics-exporter-prometheus
Maintenance
14
Quality
13
Community
14
Popularity
8
Documentation
14
Technical Details
| metrics-observer-json | foundations | metrics-exporter-prometheus | |
|---|---|---|---|
| Version | 0.1.1 | 5.5.3 | 0.18.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | BSD-3-Clause | MIT |
| Dependencies | 4 | 65 | 22 |
| Crate Size | 6KB | 322KB | 62KB |
| Features | 0 | 21 | 10 |
| Yanked % | 0.0% | 19.4% | 5.0% |
| Edition | 2018 | 2024 | 2018 |
| MSRV | — | — | 1.71.1 |
| Owners | 1 | 4 (team) | 1 |
Links
Quick Verdict
- •foundations leads with a health score of 69/100, but none of the options score above 80.
- •metrics-exporter-prometheus has the most downloads (26.1M), suggesting wider adoption.
- •metrics-exporter-prometheus is depended on by 2.3K 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.