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apache/pulsar

Coolingrank #121

Apache Pulsar - distributed pub-sub messaging system

15.4k+18 · 7d 3.8k 186est. Apache-2.0Javapushed 34m ago
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Composite

64

conf 65%

Momentum

42

conf 60%

Vitality (PVI)

71

conf 67%

Community

68

conf 60%

Security & maint.

85

conf 85%

Ecosystem influence

70

conf 60%

Opportunity

57

conf 60%

Breakout · 7d

7%

conf 71%

Executive summary

pulsar is currently classified as cooling with a composite score of 64/100. Momentum (42) and vitality (71) are aligned — growth is backed by sustained maintenance. Estimated 7-day gain of 18 stars against a 15.4k-star base. Risk is assessed as low; the interpretable model puts its probability of entering the top trend cohort within 7 days at 7%.

90-day trajectory

+123 · 30d
2026-08-032026-10-31

Score breakdown

Every input, weight and normalized value — nothing hidden. Inputs marked est. are estimated until the full ingestion pipeline lands.

Momentum

Star velocityest.25%35
Star accelerationest.15%31
Fork velocityest.10%17
Contributor growthest.10%80
Issue activity growthest.10%60
PR activity growthest.10%67
External mention velocityest.10%1
Release event impactest.5%65
Trending-rank persistenceest.5%53

Model tn-interpretable-1.0.0 · confidence 60% · coverage 100%

Project Vitality Index

Commit consistency20%100
Release cadenceest.15%59
PR responsivenessest.15%62
Issue responsivenessest.15%52
Contributor diversityest.10%84
Maintainer continuityest.10%63
Documentation qualityest.5%72
Dependency freshnessest.5%79
Security hygieneest.5%48

Model tn-interpretable-1.0.0 · confidence 67% · coverage 100%

Security & maintenance

Release recency25%100
License clarity20%92
Maintenance status25%100
Dependency stalenessest.15%42
Bus factorest.15%69

Model tn-interpretable-1.0.0 · confidence 85% · coverage 100%

Ecosystem influence

Dependent repositoriesest.30%87
Quality-weighted dependentsest.20%68
Documentation citationsest.15%49
Contributor overlapest.15%53
Registry adoptionest.10%45
Topic centralityest.10%100

Model tn-interpretable-1.0.0 · confidence 60% · coverage 92% · missing: packageRegistryAdoption