Public recordAt risk
Software health reportschema 0.15.0 · metrics 1.13.0 · 2026-07-20 12:45 UTC
zhisheng17 / flink-learning
flink learning blog. http://www.54tianzhisheng.cn/ 含 Flink 入门、概念、原理、实战、性能调优、源码解析等内容。涉及 Flink Connector、Metrics、Library、DataStream API、Table API & SQL 等内容的学习案例，还有 Flink 落地应用的大型项目案例（PVUV、日志存储、百亿数据实时去重、监控告警）分享。欢迎大家支持我的专栏《大数据实时计算引擎 Flink 实战与性能优化》
zhisheng17/flink-learning holds a health index of 43 out of 100, placing it in the At risk band. It scores highest on Community & Adoption (77/100) and lowest on Vitality (21/100). It was last updated 74 days ago. A single contributor accounts for most of its recent work.
43
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.
43
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe problems (abandoned, single-maintainer, no hygiene)
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.
Ownership
zhishengPersonal account
1,471 followers28 public repossince Dec 2014
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
21
Development activity
35At risk
How it's scored
| 18/36 | Push recency — last push 74 days ago |
| 1.4/36 | Commit cadence — 2/52 weeks with commits |
| 15.3/18 | Commit volume — 49 commits in the last year |
| 0/10 | OpenSSF Scorecard: Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
Inputs used
| commits_last_year | 49 |
| human_commit_share | — |
| days_since_last_push | 74 |
| active_weeks_last_year | 2 |
Release discipline
1Critical
How it's scored
| 0/27 | Ships releases — no releases published |
| 0/36 | Release recency — no releases |
| 0/27 | Release cadence — no releases |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 0 |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
77
Popularity & adoption
100Excellent
How it's scored
| 60/60 | Stars — 15,081 stars |
| 25/25 | Forks — 3,941 forks |
| 15/15 | Watchers — 503 watchers |
Inputs used
| forks | 3,941 |
| stars | 15,081 |
| watchers | 503 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
50Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| has_pull_request_template | no |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
45
Maintainer resilience (bus factor)
31At risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 2.9/22.5 | Commit distribution — top contributor authored 87% of commits |
| 9.5/13.5 | Contributor breadth — 7 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 7 |
| top_contributor_share | 0.871 |
Issue & PR responsiveness
38At risk
How it's scored
| 0/46.8 | Issue resolution — no issues or no data |
| 14.5/38.3 | PR acceptance — 31/82 decided PRs merged |
| 0/15 | OpenSSF Scorecard: Code-Review — no data |
Inputs used
| merged_prs | 31 |
| open_issues | 0 |
| closed_issues | 0 |
| issue_closed_ratio | — |
| closed_unmerged_prs | 51 |
Excluded from scoring (no data or not applicable): Issue resolution, OpenSSF Scorecard: Code-Review. Remaining weights renormalized.
Ownership & stewardship
69Moderate
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 22.8/25 | Owner reach — 1,471 followers of zhisheng17 |
| 22.6/25 | Track record — 28 public repos, account ~11 yr old |
Inputs used
| followers | 1,471 |
| owner_type | User |
| is_verified | — |
| owner_login | zhisheng17 |
| public_repos | 28 |
| account_age_days | 4,245 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Engineering Quality
Are baseline engineering and documentation practices in place?
44
Engineering practices
24Critical
How it's scored
| 0/24 | CI workflows |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 0/20 | OpenSSF Scorecard: CI-Tests — 0 out of 9 merged PRs checked by a CI test -- score normalized to 0 |
Inputs used
| has_ci | no |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
75Good
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 15/15 | Documentation / homepage site — http://www.54tianzhisheng.cn/tags/Flink/ |
| 10/10 | Repository description |
| 10/10 | Topics — 15 topics |
| 10/10 | Wiki |
Inputs used
| topics | flink, kafka, elasticsearch, spark, redis, mysql, rocketmq, hbase, rabbitmq, stream-processing, streaming, clickhouse, loki, influxdb, opentsdb |
| has_wiki | yes |
| homepage | http://www.54tianzhisheng.cn/tags/Flink/ |
| has_readme | yes |
| has_docs_dir | no |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
30
Security posture
30At risk
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — branch protection not enabled on development/release branches |
| 0/2.5 | CI-Tests — 0 out of 9 merged PRs checked by a CI test -- score normalized to 0 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 0/7.5 | Code-Review — no data |
| 2.5/2.5 | Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
| 0/10 | Dangerous-Workflow — no data |
| 7.5/7.5 | Dependency-Update-Tool — update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 0/7.5 | Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
| 0/5 | Packaging — no data |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — no data |
| 0/7.5 | Vulnerabilities — 117 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 13 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 5 |
| scorecard_aggregate | 3 |
Excluded from scoring (no data or not applicable): code_review, dangerous_workflow, packaging, signed_releases, token_permissions. Remaining weights renormalized.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.
37
Agent context & guidance
1Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 0/40 | Legible commit history — no data |
Inputs used
| has_llms_txt | no |
| legible_history_share | — |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
| 0/18 | One-command bootstrap |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Java (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no data |
| 0/8 | Automated maintenance — no data |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | — |
| toolchain_manifests | — |
| dependency_bot_commit_share | — |
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.
Code legibility for models
100Excellent
How it's scored
| 45/45 | Type-checkable code — Java (statically typed) |
| 55/55 | Manageable file sizes — 0/436 source files over 60KB |
Inputs used
| primary_language | Java |
| largest_source_bytes | 18,588 |
| source_files_sampled | 436 |
| oversized_source_files | 0 |
Machine-readable interfaces
40At risk
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) |
| 0/20 | MCP server |
| 40/40 | Runnable examples — example, examples |
Inputs used
| example_dirs | example, examples |
| has_mcp_signal | no |
| api_schema_files | — |
Key facts
15,081GitHub stars
7contributors
49commits, last 12 months
74days since last push
0releases
1bus factor
0open issues
Mavenpackage ecosystems
Data collection warnings
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-basic' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-cdc' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-common' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-configuration-center' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-connectors' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-core' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-datalake' from its registry
- Could not fetch maven package 'com.zhisheng.flink:flink-learning-examples' from its registry
More detail
OpenSSF Scorecard 3.0 / 10
3.0aggregate
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).
| 10 | Binary-Artifacts | no binaries found in the repo |
| 0 | Branch-Protection | branch protection not enabled on development/release branches |
| 0 | CI-Tests | 0 out of 9 merged PRs checked by a CI test -- score normalized to 0 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| n/a | Code-Review | Found no human activity in the last 9 changesets |
| 10 | Contributors | project has 3 contributing companies or organizations -- score normalized to 10 |
| n/a | Dangerous-Workflow | no workflows found |
| 10 | Dependency-Update-Tool | update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 0 | Maintained | 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
| n/a | Packaging | packaging workflow not detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| n/a | Token-Permissions | No tokens found |
| 0 | Vulnerabilities | 117 existing vulnerabilities detected |
Direct dependencies 18
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| Maven | com.google.guava:guava | 30.1-jre | flink-learning-common/pom.xml |
| Maven | com.google.code.gson:gson | 2.8.5 | flink-learning-common/pom.xml |
| Maven | org.apache.httpcomponents:httpclient | 4.5.13 | flink-learning-common/pom.xml |
| Maven | org.projectlombok:lombok | 1.18.36 | flink-learning-common/pom.xml |
| Maven | com.jayway.jsonpath:json-path | 2.9.0 | flink-learning-common/pom.xml |
| Maven | joda-time:joda-time | 2.9.9 | flink-learning-common/pom.xml |
| Maven | org.apache.flink:flink-statebackend-rocksdb | ${flink.version} | flink-learning-common/pom.xml |
| Maven | com.zhisheng.flink:flink-learning-common | ${project.version} | flink-learning-configuration-center/pom.xml |
| Maven | com.zhisheng.flink:flink-learning-common | ${project.version} | flink-learning-connectors/pom.xml |
| Maven | org.slf4j:slf4j-api | 1.7.36 | flink-learning-core/pom.xml |
| Maven | com.zhisheng.flink:flink-learning-common | ${project.version} | flink-learning-examples/pom.xml |
| Maven | mysql:mysql-connector-java | 5.1.34 | flink-learning-examples/pom.xml |
| Maven | org.apache.flink:flink-connector-kafka | ${flink-connector-kafka.version} | pom.xml |
| Maven | org.apache.logging.log4j:log4j-slf4j-impl | ${log4j.version} | pom.xml |
| Maven | org.apache.logging.log4j:log4j-api | ${log4j.version} | pom.xml |
| Maven | org.apache.logging.log4j:log4j-core | ${log4j.version} | pom.xml |
| Maven | org.apache.flink:flink-streaming-java | ${flink.version} | pom.xml |
| Maven | org.apache.flink:flink-clients | ${flink.version} | pom.xml |
All dependencies 97
Full resolved dependency set from the GitHub dependency graph: 19 direct and 78 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| Maven | com.google.code.gson:gson | 2.8.5 | direct |
| Maven | com.google.guava:guava | 30.1-jre | direct |
| Maven | com.jayway.jsonpath:json-path | 2.9.0 | direct |
| Maven | com.zhisheng.flink:flink-learning-common | 1.0-SNAPSHOT | direct |
| Maven | joda-time:joda-time | 2.9.9 | direct |
| Maven | mysql:mysql-connector-java | 5.1.34 | direct |
| Maven | mysql:mysql-connector-java | 5.1.44 | direct |
| Maven | org.apache.flink:flink-clients | — | direct |
| Maven | org.apache.flink:flink-clients | 1.20.3 | direct |
| Maven | org.apache.flink:flink-connector-kafka | 3.4.0-1.20 | direct |
| Maven | org.apache.flink:flink-statebackend-rocksdb | — | direct |
| Maven | org.apache.flink:flink-streaming-java | — | direct |
| Maven | org.apache.flink:flink-streaming-java | 1.20.3 | direct |
| Maven | org.apache.httpcomponents:httpclient | 4.5.13 | direct |
| Maven | org.apache.logging.log4j:log4j-api | 2.25.3 | direct |
| Maven | org.apache.logging.log4j:log4j-core | 2.25.3 | direct |
| Maven | org.apache.logging.log4j:log4j-slf4j-impl | 2.25.3 | direct |
| Maven | org.projectlombok:lombok | 1.18.36 | direct |
| Maven | org.slf4j:slf4j-api | 1.7.36 | direct |
| Maven | com.alibaba.nacos:nacos-client | 1.1.4 | indirect |
| Maven | com.alibaba.nacos:nacos-common | 1.4.5 | indirect |
| Maven | com.alibaba:fastjson | 1.2.83 | indirect |
| Maven | com.ctrip.framework.apollo:apollo-client | 1.5.1 | indirect |
| Maven | com.mashape.unirest:unirest-java | 1.4.9 | indirect |
| Maven | com.squareup.okhttp3:okhttp | 4.9.2 | indirect |
| Maven | com.ververica:flink-sql-connector-db2-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-mongodb-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-mysql-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-oceanbase-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-oracle-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-postgres-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-sqlserver-cdc | — | indirect |
| Maven | com.ververica:flink-sql-connector-tidb-cdc | — | indirect |
| Maven | com.zhisheng.flink:flink-learning-monitor-common | 1.0-SNAPSHOT | indirect |
| Maven | com.zhisheng.flink:flink-learning-project-common | 1.0-SNAPSHOT | indirect |
| Maven | com.zhisheng.flink:flink-learning-sql-common | 1.0-SNAPSHOT | indirect |
| Maven | com.zhisheng.flink:KafkaAppenderCommon | 1.0-SNAPSHOT | indirect |
| Maven | io.delta:delta-flink | — | indirect |
| Maven | io.fabric8:kubernetes-client | 4.9.2 | indirect |
| Maven | io.krakens:java-grok | 0.1.9 | indirect |
| Maven | io.netty:netty-all | 4.1.42 | indirect |
| Maven | io.prometheus:simpleclient | 0.8.1 | indirect |
| Maven | io.prometheus:simpleclient_httpserver | 0.8.1 | indirect |
| Maven | io.prometheus:simpleclient_pushgateway | 0.8.1 | indirect |
| Maven | junit:junit | 4.12 | indirect |
| Maven | junit:junit | 4.13.1 | indirect |
| Maven | org.antlr:antlr4 | 4.7.2 | indirect |
| Maven | org.apache.commons:commons-dbcp2 | 2.1.1 | indirect |
| Maven | org.apache.flink:flink-annotations | — | indirect |
| Maven | org.apache.flink:flink-cep | — | indirect |
| Maven | org.apache.flink:flink-connector-elasticsearch6 | — | indirect |
| Maven | org.apache.flink:flink-connector-elasticsearch7 | — | indirect |
| Maven | org.apache.flink:flink-connector-gcp-pubsub | — | indirect |
| Maven | org.apache.flink:flink-connector-hbase-2.2 | — | indirect |
| Maven | org.apache.flink:flink-connector-jdbc | — | indirect |
| Maven | org.apache.flink:flink-connector-nifi | 1.15.4 | indirect |
| Maven | org.apache.flink:flink-connector-rabbitmq | — | indirect |
| Maven | org.apache.flink:flink-connector-redis_2.10 | 1.1.5 | indirect |
| Maven | org.apache.flink:flink-core | — | indirect |
| Maven | org.apache.flink:flink-java | — | indirect |
| Maven | org.apache.flink:flink-json | — | indirect |
| Maven | org.apache.flink:flink-metrics-core | — | indirect |
| Maven | org.apache.flink:flink-metrics-dropwizard | — | indirect |
| Maven | org.apache.flink:flink-parquet | — | indirect |
| Maven | org.apache.flink:flink-queryable-state-client-java | — | indirect |
| Maven | org.apache.flink:flink-runtime | — | indirect |
| Maven | org.apache.flink:flink-shaded-jackson | 2.15.3-19.0 | indirect |
| Maven | org.apache.flink:flink-sql-avro | — | indirect |
| Maven | org.apache.flink:flink-sql-connector-elasticsearch7 | — | indirect |
| Maven | org.apache.flink:flink-sql-connector-hbase-2.2 | — | indirect |
| Maven | org.apache.flink:flink-sql-connector-kafka | — | indirect |
| Maven | org.apache.flink:flink-sql-orc | — | indirect |
| Maven | org.apache.flink:flink-sql-parquet | — | indirect |
| Maven | org.apache.flink:flink-state-processor-api | — | indirect |
| Maven | org.apache.flink:flink-table-api-java | — | indirect |
| Maven | org.apache.flink:flink-table-api-java-bridge | — | indirect |
| Maven | org.apache.flink:flink-table-common | — | indirect |
| Maven | org.apache.flink:flink-test-utils-junit | — | indirect |
| Maven | org.apache.flume:flume-ng-core | 1.9.0 | indirect |
| Maven | org.apache.hadoop:hadoop-client | 3.4.1 | indirect |
| Maven | org.apache.hadoop:hadoop-common | 3.4.0 | indirect |
| Maven | org.apache.hadoop:hadoop-mapreduce-client-core | 2.6.0 | indirect |
| Maven | org.apache.hudi:hudi-flink1.20-bundle | — | indirect |
| Maven | org.apache.iceberg:iceberg-flink-runtime-1.20 | — | indirect |
| Maven | org.apache.kafka:kafka-clients | 3.9.1 | indirect |
| Maven | org.apache.maven.plugins:maven-compiler-plugin | — | indirect |
| Maven | org.apache.maven.plugins:maven-compiler-plugin | 3.6.0 | indirect |
| Maven | org.apache.maven.plugins:maven-shade-plugin | — | indirect |
| Maven | org.apache.maven.plugins:maven-shade-plugin | 3.1.0 | indirect |
| Maven | org.apache.maven.plugins:maven-shade-plugin | 3.1.1 | indirect |
| Maven | org.apache.rocketmq:rocketmq-client | 4.2.0 | indirect |
| Maven | org.apache.rocketmq:rocketmq-common | 4.2.0 | indirect |
| Maven | org.influxdb:influxdb-java | 2.7 | indirect |
| Maven | org.postgresql:postgresql | 42.3.3 | indirect |
| Maven | org.postgresql:postgresql | 42.3.9 | indirect |
| Maven | org.slf4j:slf4j-log4j12 | 1.7.15 | indirect |
| Maven | redis.clients:jedis | 2.9.0 | indirect |
Raw JSON report machine-readable
{
"data": {
"repo": {
"topics": [
"flink",
"kafka",
"elasticsearch",
"spark",
"redis",
"mysql",
"rocketmq",
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"rabbitmq",
"stream-processing",
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"loki",
"influxdb",
"opentsdb"
],
"is_fork": false,
"size_kb": 43774,
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"languages": {
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"Shell": 5940
},
"pushed_at": "2026-05-06T13:39:08Z",
"created_at": "2019-01-01T07:38:28Z",
"owner_type": "User",
"updated_at": "2026-07-19T06:29:48Z",
"description": "flink learning blog. http://www.54tianzhisheng.cn/ 含 Flink 入门、概念、原理、实战、性能调优、源码解析等内容。涉及 Flink Connector、Metrics、Library、DataStream API、Table API & SQL 等内容的学习案例，还有 Flink 落地应用的大型项目案例（PVUV、日志存储、百亿数据实时去重、监控告警）分享。欢迎大家支持我的专栏《大数据实时计算引擎 Flink 实战与性能优化》",
"is_archived": false,
"is_disabled": false,
"license_spdx": "Apache-2.0",
"default_branch": "master",
"license_spdx_raw": "Apache-2.0",
"primary_language": "Java",
"significant_languages": [
"Java"
]
},
"owner": {
"blog": "http://www.54tianzhisheng.cn?gayhub",
"name": "zhisheng",
"type": "User",
"login": "zhisheng17",
"company": null,
"location": "hangzhou China",
"followers": 1471,
"avatar_url": "https://avatars.githubusercontent.com/u/10086212?v=4",
"created_at": "2014-12-05T11:06:41Z",
"is_verified": null,
"public_repos": 28,
"account_age_days": 4245
},
"license": {
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{
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{
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{
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"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#dependency-update-tool"
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{
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"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#fuzzing"
},
{
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"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#license"
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{
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{
"name": "Packaging",
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"reason": "packaging workflow not detected",
"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#packaging"
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{
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{
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"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#sast"
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{
"name": "Security-Policy",
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"reason": "security policy file not detected",
"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#security-policy"
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{
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"reason": "no releases found",
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{
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"reason": "No tokens found",
"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#token-permissions"
},
{
"name": "Vulnerabilities",
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"reason": "117 existing vulnerabilities detected",
"documentation_url": "https://github.com/ossf/scorecard/blob/c395761df6afe1a69e476bc60a013a94bcbc153f/docs/checks.md#vulnerabilities"
}
],
"commit": "d731cee7618021be56d132cc925102ffff8d75e6",
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"aggregate_score": 3,
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"has_codeql_workflow": false,
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"has_dependabot_config": false
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},
"config": {
"disabled_metrics": [],
"disabled_categories": [],
"disabled_components": {}
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"source": {
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"host": "github.com",
"name": "flink-learning",
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"metrics": {
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"community": 77,
"governance": 45,
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"components": []
},
"categories": [
{
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"name": "Vitality",
"value": 21,
"weight": 0.22,
"metrics": [
{
"key": "development_activity",
"band": "at_risk",
"name": "Development activity",
"note": null,
"notes": [],
"value": 35,
"inputs": {
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"human_commit_share": null,
"days_since_last_push": 74,
"active_weeks_last_year": 2
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"components": [
{
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{
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"points": 1.4,
"status": "partial",
"details": [
{
"code": "commit_cadence_weeks",
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"weeks": 2
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{
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"points": 15.3,
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"key": "openssf_scorecard_maintained",
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"points": 0,
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{
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"notes": [
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},
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"components": [
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{
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{
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"note": null,
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"points": 100,
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],
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{
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"growth_factor_pct": 100,
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"components": [
{
"key": "stars",
"name": "Stars",
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"code": "stars",
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{
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{
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"points": 15,
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"details": [
{
"code": "watchers",
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"count": 503
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}
],
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]
},
{
"key": "community_health",
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"note": null,
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"value": 50,
"inputs": {
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"has_license": true,
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"components": [
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},
{
"key": "license",
"name": "License",
"detail": "recognized license (Apache-2.0)",
"points": 22.5,
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"details": [
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"code": "license_standard",
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{
"code": "license_spdx",
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{
"key": "code_of_conduct",
"name": "Code of conduct",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 13.5
},
{
"key": "issue_template",
"name": "Issue template",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.2
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{
"key": "pr_template",
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"detail": null,
"points": 0,
"status": "missed",
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]
}
],
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},
{
"key": "governance",
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"name": "Sustainability & Governance",
"value": 45,
"weight": 0.24,
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"key": "maintainer_resilience",
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"note": null,
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"components": [
{
"key": "bus_factor",
"name": "Bus factor",
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"points": 9,
"status": "partial",
"details": [
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],
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{
"key": "commit_distribution",
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"detail": "top contributor authored 87% of commits",
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"status": "partial",
"details": [
{
"code": "top_contributor_share",
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}
],
"max_points": 22.5
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{
"key": "contributor_breadth",
"name": "Contributor breadth",
"detail": "7 contributors",
"points": 9.5,
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"code": "contributors_sampled",
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}
],
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{
"key": "openssf_scorecard_contributors",
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]
},
{
"key": "responsiveness",
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"notes": [
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"code": "excluded_no_data",
"params": {
"components": [
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}
},
{
"code": "weights_renormalized",
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],
"value": 38,
"inputs": {
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"components": [
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"key": "issue_resolution",
"name": "Issue resolution",
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"points": 0,
"status": "excluded",
"details": [
{
"code": "no_issues_or_data",
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}
],
"max_points": 46.75
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{
"key": "pr_acceptance",
"name": "PR acceptance",
"detail": "31/82 decided PRs merged",
"points": 14.5,
"status": "partial",
"details": [
{
"code": "decided_prs_merged",
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{
"key": "openssf_scorecard_code_review",
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"status": "excluded",
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"code": "no_data",
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],
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]
},
{
"key": "stewardship",
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"notes": [
{
"code": "excluded_no_data",
"params": {
"components": [
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},
{
"code": "weights_renormalized",
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"value": 69,
"inputs": {
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"components": [
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"code": "owner_personal",
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],
"max_points": 30
},
{
"key": "verified_domain",
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{
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{
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"status": "partial",
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"code": "public_repos",
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}
],
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{
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{
"key": "tests_present",
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{
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{
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{
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]
},
{
"key": "documentation",
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"notes": [],
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"inputs": {
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{
"key": "documentation_directory",
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{
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}
],
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"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 7.5
},
{
"key": "contributors",
"name": "Contributors",
"detail": "project has 3 contributing companies or organizations -- score normalized to 10",
"points": 2.5,
"status": "met",
"details": [],
"max_points": 2.5
},
{
"key": "dangerous_workflow",
"name": "Dangerous-Workflow",
"detail": "no workflows found",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 10
},
{
"key": "dependency_update_tool",
"name": "Dependency-Update-Tool",
"detail": "update tool detected",
"points": 7.5,
"status": "met",
"details": [],
"max_points": 7.5
},
{
"key": "fuzzing",
"name": "Fuzzing",
"detail": "project is not fuzzed",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "license",
"name": "License",
"detail": "license file detected",
"points": 2.5,
"status": "met",
"details": [],
"max_points": 2.5
},
{
"key": "maintained",
"name": "Maintained",
"detail": "0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "packaging",
"name": "Packaging",
"detail": "packaging workflow not detected",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 5
},
{
"key": "pinned_dependencies",
"name": "Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "sast",
"name": "SAST",
"detail": "SAST tool is not run on all commits -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "security_policy",
"name": "Security-Policy",
"detail": "security policy file not detected",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "signed_releases",
"name": "Signed-Releases",
"detail": "no releases found",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 7.5
},
{
"key": "token_permissions",
"name": "Token-Permissions",
"detail": "No tokens found",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 7.5
},
{
"key": "vulnerabilities",
"name": "Vulnerabilities",
"detail": "117 existing vulnerabilities detected",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
}
]
},
{
"key": "high_risk_jurisdiction_exposure",
"band": "excellent",
"name": "High-Risk Jurisdiction Exposure",
"note": "Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.",
"notes": [
{
"code": "jurisdiction_evidence_limits",
"params": {}
}
],
"value": 100,
"inputs": {
"meaning": "self-published location evidence; not nationality or citizenship",
"red_flag": false,
"exposures": [],
"policy_countries": [
"Russia",
"Iran",
"North Korea"
],
"review_only_matches": 0,
"assessed_self_published_locations": 5
},
"components": [
{
"key": "policy_exposure_multiplier",
"name": "Policy exposure multiplier",
"detail": "no confirmed policy-scope location match",
"points": 100,
"status": "met",
"details": [
{
"code": "jurisdiction_no_match",
"params": {}
}
],
"max_points": 100
}
]
}
],
"description": "Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure?"
},
{
"key": "ai_readiness",
"band": "at_risk",
"name": "AI Readiness",
"value": 37,
"weight": 0,
"metrics": [
{
"key": "ai_agent_context",
"band": "critical",
"name": "Agent context & guidance",
"note": "Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.",
"notes": [
{
"code": "excluded_no_data",
"params": {
"components": [
"legible_commit_history"
]
}
},
{
"code": "weights_renormalized",
"params": {}
}
],
"value": 1,
"inputs": {
"has_llms_txt": false,
"legible_history_share": null,
"agent_instruction_files": [],
"agent_instruction_max_bytes": null
},
"components": [
{
"key": "agent_instructions",
"name": "Agent instructions",
"detail": "no CLAUDE.md / AGENTS.md / editor rules",
"points": 0,
"status": "missed",
"details": [
{
"code": "no_agent_instructions",
"params": {}
}
],
"max_points": 45
},
{
"key": "machine_readable_docs_llms_txt",
"name": "Machine-readable docs (llms.txt)",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 15
},
{
"key": "legible_commit_history",
"name": "Legible commit history",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 40
}
]
},
{
"key": "ai_verify_loop",
"band": "at_risk",
"name": "Verify loop (build / test / typecheck)",
"note": "Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.",
"notes": [
{
"code": "excluded_no_data",
"params": {
"components": [
"demonstrated_agent_practice",
"automated_maintenance"
]
}
},
{
"code": "weights_renormalized",
"params": {}
}
],
"value": 40,
"inputs": {
"has_nix": false,
"has_tests": true,
"lockfiles": [],
"has_dockerfile": false,
"typed_language": true,
"bootstrap_files": [],
"has_devcontainer": false,
"has_linter_config": false,
"typecheck_configs": [],
"agent_commit_share": null,
"toolchain_manifests": [],
"dependency_bot_commit_share": null
},
"components": [
{
"key": "one_command_bootstrap",
"name": "One-command bootstrap",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 18
},
{
"key": "automated_tests",
"name": "Automated tests",
"detail": null,
"points": 22,
"status": "met",
"details": [],
"max_points": 22
},
{
"key": "lint_format_config",
"name": "Lint / format config",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 11
},
{
"key": "static_type_checking",
"name": "Static type checking",
"detail": "Java (statically typed)",
"points": 11,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Java"
}
}
],
"max_points": 11
},
{
"key": "reproducible_environment",
"name": "Reproducible environment",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 10
},
{
"key": "demonstrated_agent_practice",
"name": "Demonstrated agent practice",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 10
},
{
"key": "automated_maintenance",
"name": "Automated maintenance",
"detail": "no data",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 8
},
{
"key": "openssf_scorecard_pinned_dependencies",
"name": "OpenSSF Scorecard: Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 10
}
]
},
{
"key": "ai_code_legibility",
"band": "excellent",
"name": "Code legibility for models",
"note": null,
"notes": [],
"value": 100,
"inputs": {
"primary_language": "Java",
"largest_source_bytes": 18588,
"source_files_sampled": 436,
"oversized_source_files": 0
},
"components": [
{
"key": "type_checkable_code",
"name": "Type-checkable code",
"detail": "Java (statically typed)",
"points": 45,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Java"
}
}
],
"max_points": 45
},
{
"key": "manageable_file_sizes",
"name": "Manageable file sizes",
"detail": "0/436 source files over 60KB",
"points": 55,
"status": "met",
"details": [
{
"code": "oversized_source_files",
"params": {
"kb": 60,
"sampled": 436,
"oversized": 0
}
}
],
"max_points": 55
}
]
},
{
"key": "ai_interfaces",
"band": "at_risk",
"name": "Machine-readable interfaces",
"note": null,
"notes": [],
"value": 40,
"inputs": {
"example_dirs": [
"example",
"examples"
],
"has_mcp_signal": false,
"api_schema_files": []
},
"components": [
{
"key": "api_schema_openapi_graphql_proto",
"name": "API schema (OpenAPI/GraphQL/proto)",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 40
},
{
"key": "mcp_server",
"name": "MCP server",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 20
},
{
"key": "runnable_examples",
"name": "Runnable examples",
"detail": "example, examples",
"points": 40,
"status": "met",
"details": [
{
"code": "file_list",
"params": {
"files": "example, examples"
}
}
],
"max_points": 40
}
]
}
],
"description": "How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score."
}
],
"metrics_version": "1.13.0"
},
"warnings": [
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-basic' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-cdc' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-common' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-configuration-center' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-connectors' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-core' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-datalake' from its registry",
"Could not fetch maven package 'com.zhisheng.flink:flink-learning-examples' from its registry"
],
"report_type": "repository",
"generated_at": "2026-07-20T12:45:08.319681Z",
"schema_version": "0.15.0",
"badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/z/zhisheng17/flink-learning.svg",
"full_name": "zhisheng17/flink-learning",
"license_state": "standard",
"license_spdx": "Apache-2.0"
}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 v1.13.0, schema v0.15.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics.