Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-08-27 00:44 UTC

bitfaster / BitFaster.Caching

High performance, thread-safe in-memory caching primitives for .NET

C#MIT★ 605 stars⑂ 42 forkssince Jun 2020View on GitHub ↗

bitfaster/BitFaster.Caching holds a health index of 71 out of 100, placing it in the Good band. It scores highest on Vitality (72/100) and lowest on Engineering Quality (53/100). It was last updated today. A single contributor accounts for most of its recent work.

71
overall / 100
Good

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

71
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 63 is calibrated to 71 on the published index scale (record calibration 2026-08-02).

Ownership

Alex PeckPersonal account
51 followers11 public repossince Jun 2015Microsoft

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
NuGetBitFaster.Caching2.6.1-330 days agocachelrulfuperformancein-memorythread-safeconcurrent

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

72Good · 21% of overall
How it's scored
36/36Push recencylast push 0 days ago
9/36Commit cadence13/52 weeks with commits
16.2/18Commit volume63 commits in the last year
4/10OpenSSF Scorecard: Maintained5 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 4
Inputs used
commits_last_year63
human_commit_share0.86
days_since_last_push0
active_weeks_last_year13
How it's scored
27/27Ships releases31 releases published
36/36Release recencylatest release 0 days ago
19.8/27Release cadencea release every ~113.2 days
0/10OpenSSF Scorecard: Signed-ReleasesProject has not signed or included provenance with any releases.
Inputs used
releases_count31
latest_release_tagv2.6.1
releases_from_tagsno
days_since_latest_release0
mean_days_between_releases113.2

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

67Good · 17% of overall
How it's scored
45.1/60Stars605 stars
13.4/25Forks42 forks
5/15Watchers9 watchers
Inputs used
forks42
stars605
watchers9
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized license (MIT)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges4
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicesbadge.fury.io, coveralls.io, github.com, shields.io
has_pull_request_templateno
How it's scored
76.2/80Total downloads21,361,152 downloads all-time across nuget
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packagesBitFaster.Caching
dependents
ecosystemsnuget
total_downloads21,361,152
monthly_downloads
unverified_packages_excluded
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

59Moderate · 23% of overall
How it's scored
9/54Bus factor1 contributor(s) cover half of all commits
0.2/22.5Commit distributiontop contributor authored 99% of commits
6.8/13.5Contributor breadth5 contributors
3/10OpenSSF Scorecard: Contributorsproject has 1 contributing companies or organizations -- score normalized to 3
Inputs used
bus_factor1
contributors_sampled5
top_contributor_share0.99
How it's scored
40.2/42Issue resolution96% of issues closed
24.8/30PR acceptance622/751 decided PRs merged
13/13Newcomer PR acceptance1/1 first-time contributors' PRs merged in 30d
1.5/15OpenSSF Scorecard: Code-ReviewFound 2/14 approved changesets -- score normalized to 1
Inputs used
merged_prs622
open_issues2
closed_issues44
prs_merged_7d3
prs_decided_7d3
prs_merged_30d3
prs_decided_30d3
issue_closed_ratio0.957
closed_unmerged_prs129
first_time_authors_30d1
first_time_prs_merged_30d1
first_time_prs_decided_30d1
How it's scored
10/30Ownership backingpersonal (user) account
0/20Verified domainnot applicable to user accounts
12.3/25Owner reach51 followers of bitfaster
19.9/25Track record11 public repos, account ~11 yr old
Inputs used
followers51
owner_typeUser
is_verified
owner_loginbitfaster
public_repos11
account_age_days4,094
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable1 package(s) on nuget
35/35Publish recencylatest publish 0 days ago
20/20Version history33 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagesBitFaster.Caching
ecosystemsnuget
any_deprecatedno
min_days_since_publish0

Engineering Quality

Are baseline engineering and documentation practices in place?

53Moderate · 19% of overall
How it's scored
24/24CI workflows6 workflow(s)
0/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
18/20OpenSSF Scorecard: CI-Tests29 out of 30 merged PRs checked by a CI test -- score normalized to 9
Inputs used
has_ciyes
has_testsno
has_editorconfigyes
has_linter_configno
has_precommit_configno

Documentation

60Moderate
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics5 topics
10/10Wiki
Inputs used
topicscache, lru, threadsafe, dotnet, lfu
has_wikiyes
homepage
docs_site
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

62Moderate · 16% of overall
How it's scored
7.5/7.5Binary-Artifactsno binaries found in the repo
0/7.5Branch-Protectionno data
2.2/2.5CI-Tests29 out of 30 merged PRs checked by a CI test -- score normalized to 9
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0.8/7.5Code-ReviewFound 2/14 approved changesets -- score normalized to 1
0.8/2.5Contributorsproject has 1 contributing companies or organizations -- score normalized to 3
10/10Dangerous-Workflowno dangerous workflow patterns detected
7.5/7.5Dependency-Update-Toolupdate tool detected
0/5Fuzzingproject is not fuzzed
2.5/2.5Licenselicense file detected
3/7.5Maintained5 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 4
0/5Packagingno data
0/5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
4.5/5SASTSAST tool detected but not run on all commits
2/5Security-Policysecurity policy file detected
0/7.5Signed-ReleasesProject has not signed or included provenance with any releases.
0/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate5.2
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisoriesno direct dependency carries a known advisory
0/25Indirect dependencies free of known advisoriestransitive set not separable from development and test dependencies in this scope
0/40No advisories left outstandingno advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages25
unassessed_packages0
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 25 resolved dependencies against OSV. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

67Good · 4% of overall
How it's scored
45/45Agent instructionsclaude.md
0/15Machine-readable docs (llms.txt)
40/40Legible commit history83 of 86 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share0.965
agent_instruction_filesclaude.md
agent_instruction_max_bytes2,039
How it's scored
12.6/18One-command bootstrapBitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj, BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj, BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj (toolchain convention, no task runner)
0/22Automated tests
0/11Lint / format config
11/11Static type checkingC# (statically typed)
0/10Reproducible environment
10/10Demonstrated agent practice29 of the last 100 commits agent-authored or agent-credited
8/8Automated maintenance14 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsno
lockfiles
has_dockerfileno
typed_languageyes
bootstrap_files
has_devcontainerno
has_linter_configno
typecheck_configs
agent_commit_share0.29
toolchain_manifestsBitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj, BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj, BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj, BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj, BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj, BitFaster.Caching/BitFaster.Caching.csproj, Tools/HashTableSize/HashTableSize.csproj, Tools/TrimVerification/BitFaster.Trimmed/BitFaster.Trimmed.csproj
dependency_bot_commit_share0.14
How it's scored
45/45Type-checkable codeC# (statically typed)
55/55Manageable file sizes0/321 source files over 60KB
Inputs used
primary_languageC#
largest_source_bytes53,865
source_files_sampled321
oversized_source_files0

Key facts

605GitHub stars
5contributors
63commits, last 12 months
0days since last push
31releases
1bus factor
2open issues
NuGetpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

More detail

Star and fork history 0 ★ / 42 ⇿
0Stars
42Forks
26Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

010203040504222020-102023-092026-08
Major 1Minor 7Patch 18

Each point covers 6 days.

OpenSSF Scorecard 5.2 / 10
5.2aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-08-27 00:44 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
9CI-Tests29 out of 30 merged PRs checked by a CI test -- score normalized to 9
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
1Code-ReviewFound 2/14 approved changesets -- score normalized to 1
3Contributorsproject has 1 contributing companies or organizations -- score normalized to 3
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
4Maintained5 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 4
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
9SASTSAST tool detected but not run on all commits
4Security-Policysecurity policy file detected
0Signed-ReleasesProject has not signed or included provenance with any releases.
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 41
RegistryPackageVersion constraintManifest
NuGetBenchly0.7.0BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetBenchmarkDotNet0.15.8BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetBenchmarkDotNet.Diagnostics.Windows0.15.8BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetMathNet.Numerics5.0.0BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetMicrosoft.Extensions.Caching.Memory9.0.2BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetSystem.Runtime.Caching8.0.1BitFaster.Caching.Benchmarks/BitFaster.Caching.Benchmarks.csproj
NuGetConsoleTables2.6.2BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetCsvHelper33.0.1BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetEasyConsole1.1.0BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetGitInfo3.5.0BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetMathNet.Numerics5.0.0BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetMicrosoft.Extensions.Caching.Memory9.0.2BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetPlotly.NET.CSharp0.13.0BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetPlotly.NET.ImageExport6.1.0BitFaster.Caching.HitRateAnalysis/BitFaster.Caching.HitRateAnalysis.csproj
NuGetBenchmarkDotNet0.14.0BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetConsoleTables2.6.2BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetCsvHelper33.0.1BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetEasyConsole1.1.0BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetGitInfo3.5.0BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetMicrosoft.Extensions.Caching.Memory9.0.2BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetPlotly.NET5.1.0BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetPlotly.NET.ImageExport6.1.0BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj
NuGetcoverlet.msbuild10.0.1BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetFluentAssertions7.0.0BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetMicrosoft.NET.Test.Sdk17.13.0BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetMoq4.20.72BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetObjectLayoutInspector0.1.4BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetxunit2.9.3BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetxunit.runner.visualstudio2.4.5BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetXunit.SkippableFact1.5.61BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
NuGetcoverlet.collector6.0.4BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetFluentAssertions7.0.0BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetMicrosoft.NET.Test.Sdk17.13.0BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetMoq4.20.72BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetObjectLayoutInspector0.1.4BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetxunit2.9.3BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetxunit.runner.visualstudio2.4.5BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetXunit.SkippableFact1.5.61BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetSystem.Threading.Tasks.Extensions4.5.4BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
NuGetMicrosoft.SourceLink.GitHub10.0.203BitFaster.Caching/BitFaster.Caching.csproj
NuGetSystem.Threading.Tasks.Extensions4.5.4BitFaster.Caching/BitFaster.Caching.csproj
All dependencies 25

Full resolved dependency set from the GitHub dependency graph: 25 direct and 0 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
NuGetBenchly0.7.0direct
NuGetBenchmarkDotNet0.14.0direct
NuGetBenchmarkDotNet0.15.8direct
NuGetBenchmarkDotNet.Diagnostics.Windows0.15.8direct
NuGetConsoleTables2.6.2direct
NuGetcoverlet.collector6.0.4direct
NuGetcoverlet.msbuild10.0.1direct
NuGetCsvHelper33.0.1direct
NuGetEasyConsole1.1.0direct
NuGetFluentAssertions7.0.0direct
NuGetGitInfo3.5.0direct
NuGetMathNet.Numerics5.0.0direct
NuGetMicrosoft.Extensions.Caching.Memory9.0.2direct
NuGetMicrosoft.NET.Test.Sdk17.13.0direct
NuGetMicrosoft.SourceLink.GitHub10.0.203direct
NuGetMoq4.20.72direct
NuGetObjectLayoutInspector0.1.4direct
NuGetPlotly.NET5.1.0direct
NuGetPlotly.NET.CSharp0.13.0direct
NuGetPlotly.NET.ImageExport6.1.0direct
NuGetSystem.Runtime.Caching8.0.1direct
NuGetSystem.Threading.Tasks.Extensions4.5.4direct
NuGetxunit2.9.3direct
NuGetxunit.runner.visualstudio2.4.5direct
NuGetXunit.SkippableFact1.5.61direct
Dependency advisories 0

This repository publishes no package the index resolves, so its own dependency graph was assessed — 25 packages, which also include development and test pins that never ship: 0 carry known advisories, of which 0 are direct.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

Raw JSON report machine-readable

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticsNuGet.