gunnarmorling/1brc vs netflix/hystrix
gunnarmorling/1brc shows stronger signals overall
As of June 2026, 1brc shows healthier maintenance signals than hystrix. 1brc rates Healthy overall while hystrix rates Mixed. 1brc last saw a commit 1 year ago with 47+ active contributors, while hystrix last saw a commit 6 months ago with 26+ active contributors. Neither has known critical or high-severity CVEs in its dependency tree.
Informational only. RepoPilot summarises public signals at the time of analysis. Not professional, security, or legal advice.
gunnarmorling/1brc →
Healthy across all four use cases
Permissive license, no critical CVEs, actively maintained — safe to depend on.
Has a license, tests, and CI — clean foundation to fork and modify.
Documented and popular — useful reference codebase to read through.
No critical CVEs, sane security posture — runnable as-is.
- ⚠Stale — last commit 2y ago
- ✓47+ active contributors
- ✓Distributed ownership (top contributor 38% of recent commits)
- ✓Apache-2.0 licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
netflix/hystrix →
Slowing — last commit 5mo ago
no license — legally unclear
no license — can't legally use code
Documented and popular — useful reference codebase to read through.
no license — can't legally use code
- ⚠Slowing — last commit 5mo ago
- ⚠No license — legally unclear to depend on
- ✓Last commit 5mo ago
- ✓26+ active contributors
- ✓Distributed ownership (top contributor 38% of recent commits)
- ✓CI configured
- ✓Tests present
What would improve this?
- →Use as dependency Concerns → Mixed if: publish a permissive license (MIT, Apache-2.0, etc.)
- →Fork & modify Concerns → Mixed if: add a LICENSE file
- →Deploy as-is Concerns → Mixed if: add a LICENSE file
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
Signal-by-signal breakdown
| 1brc | hystrix | |
|---|---|---|
| Stars | 8,020 | 24,461 |
| Last commit | 1y ago | 6mo ago |
| License | Apache-2.0 | — |
| Open issues | 40 | 56 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 17% | 84% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | — |
| Cycles | — | — |
| Bottom-line | Healthy signals | Mixed signals |
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