{"adoption": {"forks": 1470, "observed_at": "2026-08-28T04:07:42.427789+00:00", "stars": 3093}, "canonical_url": "https://ross.abutalabs.com/products/sagan", "card": {"archived": true, "artifact_type": "application", "description": "The spring.io site and reference application", "domain": ["web-development", "backend", "developer-tools", "documentation"], "enriched": true, "function": ["web-framework", "http-server", "templating", "ssr"], "health_score": 10, "homepage": "http://spring.io", "language": "HTML", "license": "BSD-3-Clause", "license_family": "permissive", "maturity": "abandoned", "member_repos": ["spring-attic/sagan"], "name": "spring-attic/sagan", "platform": ["jvm", "self-hosted"], "pushed_at": "2023-04-19T18:55:33+00:00", "repo": "spring-attic/sagan", "stars": 3093, "tags": ["spring-boot", "reference-application", "content-site", "archived", "blog", "guides", "web-server"], "topics": [], "urls": [], "use_cases": ["study how the Spring team builds real-world Spring Boot applications", "learn best practices for a production Spring web application", "see how a content-driven site with blog and guides is implemented in Spring", "find example code for Spring MVC, security, and data access patterns", "self-host a Spring-based content website as a starting point"], "what_it_is": "Sagan is the Spring team's own web application that powered the spring.io website, including its blog and guides, built with Spring Boot as a real-world reference application. The repository is now archived and no longer used in production, but remains available as a learning resource for seeing how the Spring team built a production app.", "when_to_avoid": ["you need a maintained, production-ready CMS or website platform - the project is archived", "you want a minimal starter template - it is a large full application, not a boilerplate", "you need the current spring.io site features - production no longer uses this code"], "when_to_choose": ["you want a comprehensive, real-world Spring Boot reference codebase to learn from", "you are building a content-driven website (blog, guides, docs) with Spring", "you want to see idiomatic usage of Spring MVC, Spring Security, and Spring Data together"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/sagan", "repo": "spring-attic/sagan", "role": "main", "score": 10}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:07:42.427789+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T07:27:19.935373+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "6f840a756cc2efb98fe3c617a011a0588ad1f389f409883e85f7c7e19c0ef3e1", "fetched_at": "2026-08-28T04:07:42.427789+00:00", "kind": "readme", "missing": false, "url": "https://github.com/spring-attic/sagan"}, {"content_hash": "2b10ed88378debd1f795888e467fd1360f75a64886acb797738d52e648950cb1", "fetched_at": "2026-08-29T09:42:34.142935+00:00", "kind": "homepage", "missing": false, "url": "http://spring.io"}, {"content_hash": "fc64dd950363a4f7d15398407bbba748c61041f08a9468a0b9922bb957997ce1", "fetched_at": "2026-08-29T09:42:34.147334+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/quickstart"}, {"content_hash": "85ac7d6d51142e18decf96fb4e963203e50ac822f8bcaddb6371f7c81f2e55b6", "fetched_at": "2026-08-29T09:42:34.145491+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io"}, {"content_hash": "3251cc8760b62399f4b0f57b7b1f16c5cddaee78a88466eb8096cbf4a50122ef", "fetched_at": "2026-08-29T09:42:34.149021+00:00", "kind": "site_page", "missing": false, "url": "https://enterprise.spring.io/lts-releases"}, {"content_hash": "0523a06fe77eb15a024c1c246d3269bddbd07d5e80779f6460679d8aa600023f", "fetched_at": "2026-08-29T09:42:34.150668+00:00", "kind": "site_page", "missing": false, "url": "https://spring.io/microservices"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases", "archived"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4865, "days_push": 1232, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 10, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}