{"adoption": {"forks": 453, "observed_at": "2026-08-28T04:04:49.722087+00:00", "stars": 1474}, "canonical_url": "https://ross.abutalabs.com/products/ratis", "card": {"archived": false, "artifact_type": "library", "description": "Open source Java implementation for Raft consensus protocol.", "domain": ["microservices", "developer-tools", "databases"], "enriched": true, "function": ["rpc", "serialization", "monitoring", "concurrency"], "health_score": 80, "homepage": "https://ratis.apache.org/", "language": "Java", "license": "Apache-2.0", "license_family": "permissive", "maturity": "stable", "member_repos": ["apache/ratis"], "name": "apache/ratis", "platform": ["jvm", "cross-platform"], "pushed_at": "2026-08-26T09:59:58+00:00", "repo": "apache/ratis", "stars": 1474, "tags": ["raft", "consensus", "replicated-log", "state-machine-replication", "grpc", "apache"], "topics": ["raft", "consensus-protocol", "consensus", "java"], "urls": [], "use_cases": ["replicate application state across multiple Java instances", "build a highly available replicated log for my system", "implement a custom state machine with consensus", "add fault-tolerant data replication to a Java service", "build a distributed log service", "understand and experiment with the Raft consensus algorithm", "replace ZooKeeper-style coordination with an embeddable library"], "what_it_is": "Apache Ratis is a highly customizable Java library implementing the Raft consensus protocol for managing replicated logs and state. It offers pluggable transport (gRPC, Netty, Hadoop RPC), state machine, Raft log, and metrics layers, plus a LogService recipe for distributed log management.", "when_to_avoid": ["you need a standalone, out-of-the-box coordination server like ZooKeeper or Consul", "your stack is not on the JVM", "you only need simple leader election without a replicated log", "you need a consensus protocol other than Raft"], "when_to_choose": ["you need Raft consensus embedded in a Java/JVM application", "you want pluggable transport, log, state machine, and metrics layers", "you need high-throughput data replication rather than a standalone coordination server", "you want an Apache-licensed, actively maintained consensus library"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/ratis", "repo": "apache/ratis", "role": "main", "score": 77}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:49.722087+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:34:33.329831+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e76f7455d680ab0ca7a8f59020209b2bdf1cebb9e34e6b2dd74d0fd31decae07", "fetched_at": "2026-08-28T04:04:49.722087+00:00", "kind": "readme", "missing": false, "url": "https://github.com/apache/ratis"}, {"content_hash": "98e987e694e210357d2a9f462404d32a8d3eff6187fc5a9cdb927088fcba051f", "fetched_at": "2026-08-29T11:41:56.521131+00:00", "kind": "homepage", "missing": false, "url": "https://ratis.apache.org/"}, {"content_hash": "2f4a0d4fd421522eb5aaba4814a719c79b5a4cd17aaed790af9f6833f3048ff9", "fetched_at": "2026-08-29T11:41:56.530359+00:00", "kind": "site_page", "missing": false, "url": "https://ratis.apache.org/logservice"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3501, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 77, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}