kvcache-ai/Mooncake

What happens to a stranger's pull request here, in the Porchlamp snapshot of 14 October 2026.

Outside pull requests to Mooncake got a first human reply in a median of 12.8 hours (243 pull requests, 10 April to 7 October 2026); 19% got none within 14 days. It ranks 353 of 3,833 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.

Rating

Score: 64.35
Coverage: 81% · Ceiling A
Tier: B
Quadrant: Sweet Spot
Ecosystem: systems (C, C++ and Zig)

Five pillars

Score out of 100, and how much of the pillar was measured
Pillar	Score	Coverage
Responsiveness	82.4	55%
Criticality	58.2	100%
Governance	76.8	100%
Rigor	67.9	100%
Accessibility	24.5	50%

Rank in each lens

Lens	Standing
Balanced	Rank 353 of 3,833
First-timer	Not ranked: Not enough evidence to show under this lens.
Career capital	Not ranked: This repository's production-criticality signal is not yet high enough for career-capital ranking.
Senior systems	Rank 137 of 1,206
AI-assisted	Rank 256 of 3,929

The measured parameters

Parameter	Value	Count	Window	What it measures
Time to First Response	12.8331	243	10 April to 7 October 2026	Median hours from an outside pull request opening to its first substantive human reply.
Decision Rate (90d)	Not shown: Insufficient sample size	—	—	Share of outside pull requests that were merged or closed within 90 days.
First-timer Merge Rate	Not shown: Insufficient sample size	—	—	Share of first-time outside authors' decided pull requests that were merged.
PR Ghost Rate (14d)	0.1899	237	16 April to 13 October 2026	Share of outside pull requests with no maintainer response, merge or close within 14 days.
Time to Merge (p90)	183.475	162	10 April to 7 October 2026	Hours within which 90% of merged outside pull requests were merged.
Dependents	Not shown: Not applicable	—	—	Packages in the registry that depend on this project, counted once each.
OpenSSF Criticality	0.5822	—	—	OpenSSF criticality score from 0 to 1, computed from the project's public activity signals.
Monthly Downloads	Not shown: Not applicable	—	—	Downloads from the package registry in a month.
Legal IP Regime	NONE	—	—	The contributor licence regime: DCO, none, a foundation CLA or a corporate CLA.
Elephant Factor	13	984	—	The fewest organisations that account for half of the last year's commits.
Promotion Ladder	AD_HOC	—	—	How openly a contributor can become a maintainer, from closed to verified.
Pipeline Defenses	66.3529	255	—	How well the project's build and review pipeline defends against bad changes, 0 to 100.
AI Policy Posture	REGULATED	—	—	Whether the project has a written policy on AI-assisted contributions.
Substantive Review Rate	0.3416	202	10 April to 7 October 2026	Share of decided pull requests that received a substantive review.
Newcomer Issue Supply	2	—	—	Open, unassigned, up-to-date issues marked for newcomers.
Newcomer Conversion	Not shown: Insufficient sample size	—	—	Share of first-time authors whose first pull request merged within 180 days.
Newcomer Return Rate	Not shown: Insufficient sample size	—	—	Share of those merged first-time authors who sent a second pull request within 90 days.
Developer Experience	35	30	—	Developer experience, 0 to 100: half CI run time, half setup signals.

Similar projects

The ranked projects nearest this one in the same ecosystem.

Evidence

Snapshot 2026-10-14, data as of 13 October 2026.
Record hash: 972d2c7d39c989cec0f8a0b1934219199c4276d4588820affa0cf0b75a5496cd
The full record is in data/2026-10-14/repos/e0.json, under the key kvcache-ai/Mooncake.
How every number is measured: Porchlamp methodology.

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