{"adoption": {"forks": 1585, "observed_at": "2026-08-28T04:08:48.489167+00:00", "stars": 4410}, "canonical_url": "https://ross.abutalabs.com/products/zio", "card": {"archived": false, "artifact_type": "library", "description": "ZIO — A type-safe, composable library for async and concurrent programming in Scala", "domain": ["developer-tools", "backend", "microservices"], "enriched": true, "function": ["concurrency", "error-handling", "streaming", "testing", "scheduling", "developer-tools"], "health_score": 99, "homepage": "https://zio.dev", "language": "Scala", "license": "Apache-2.0", "license_family": "permissive", "maturity": "stable", "member_repos": ["zio/zio"], "name": "zio/zio", "platform": ["jvm", "cross-platform"], "pushed_at": "2026-08-26T00:40:20+00:00", "repo": "zio/zio", "stars": 4410, "tags": ["effect-system", "fibers", "functional-programming", "stm", "resource-safety", "async", "scala"], "topics": ["effects", "concurrency", "asynchronicity", "functional-programming", "queues", "streams", "promises", "stm", "asynchronous", "concurrent", "concurrent-programming", "asynchronous-programming", "concurrent-data-structure", "zio", "scala"], "urls": [], "use_cases": ["write concurrent Scala code without deadlocks or race conditions", "build scalable async applications on the JVM", "manage resources safely with automatic acquisition and release", "process data with composable streaming pipelines", "retry and timeout failing operations declaratively", "write deterministic, type-safe tests with injected services", "perform transactional in-memory state with STM"], "what_it_is": "ZIO is a zero-dependency Scala library for type-safe, composable asynchronous and concurrent programming, built on lightweight fibers. It provides resource safety, structured concurrency, streaming, STM, and testable dependency injection in a purely functional effect system.", "when_to_avoid": ["your project is not on Scala or the JVM", "your team is not prepared for a functional programming learning curve", "you need a minimal single-threaded app where an effect system is overkill", "you are locked into another ecosystem like Akka or Cats Effect"], "when_to_choose": ["you are building Scala/JVM applications needing high-performance concurrency", "you want compile-time type safety for async and error handling", "you need resource-safe, interruption-aware parallelism", "you want a rich ecosystem (streams, testing, DI) around one effect system"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/zio", "repo": "zio/zio", "role": "main", "score": 89}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:08:48.489167+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:21:04.040712+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "941b875f7193bc519584209f7f52f90cd33f0ac557f552cd01b15164a28e3c6c", "fetched_at": "2026-08-28T04:08:48.489167+00:00", "kind": "readme", "missing": false, "url": "https://github.com/zio/zio"}, {"content_hash": "a794b92febbac65c9f625f3725150209e4a52a652d06539acd745a8550727609", "fetched_at": "2026-08-29T09:08:55.015220+00:00", "kind": "homepage", "missing": false, "url": "https://zio.dev"}, {"content_hash": "13ae7b59f065a1716bca8ab7bf79af61a261638e5886e5e27907b9b374a8b770", "fetched_at": "2026-08-29T09:08:55.024388+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/overview/getting-started"}, {"content_hash": "3e6c3734d8766eddcc68855f104609ca63a960d3ff7ca179119a824686d50760", "fetched_at": "2026-08-29T09:08:55.026202+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/contributing-to-documentation"}, {"content_hash": "4befb004f8f0aabb6292de0d280a8088e3bed9d65faead2ebd24ebb08961e44c", "fetched_at": "2026-08-29T09:08:55.027890+00:00", "kind": "site_page", "missing": false, "url": "https://zio.dev/faq"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 71}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3028, "days_push": 8, "days_rel": 119, "gap_med": 33.5, "n_releases_24m": 17}, "score": 89, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}