{"adoption": {"forks": 146, "observed_at": "2026-08-28T04:06:14.679446+00:00", "stars": 2113}, "canonical_url": "https://ross.abutalabs.com/products/fst", "card": {"archived": false, "artifact_type": "library", "description": "Represent large sets and maps compactly with finite state transducers.", "domain": ["developer-tools", "databases"], "enriched": true, "function": ["search-engine", "data-science", "serialization"], "health_score": 20, "homepage": null, "language": "Rust", "license": "Unlicense", "license_family": "permissive", "maturity": "stable", "member_repos": ["BurntSushi/fst"], "name": "BurntSushi/fst", "platform": ["rust", "cross-platform"], "pushed_at": "2024-09-25T20:46:04+00:00", "repo": "BurntSushi/fst", "stars": 2113, "tags": ["finite-state-transducers", "automata", "memory-mapped", "compact-data-structures", "fuzzy-search", "ordered-sets", "ordered-maps", "search", "algorithms"], "topics": [], "urls": [], "use_cases": ["store billions of string keys compactly", "fast range queries over large dictionaries", "fuzzy string search with levenshtein automata", "memory-mapped searchable key-value sets", "build compact term dictionaries for search engines"], "what_it_is": "A Rust library implementing ordered sets and maps using finite state transducers, enabling compact storage of billions of string keys with fast searchable queries. It supports memory-mapped access, range queries, Levenshtein fuzzy search, and regex automata integration.", "when_to_avoid": ["you need frequent mutation of the set or map after building", "your keys are few or small enough for standard HashMap/BTreeMap", "you need rich value types rather than compact integer payloads"], "when_to_choose": ["you need to index very large sets/maps of strings with minimal memory", "you want fast fuzzy or range queries over static key data", "you're building search or autocomplete infrastructure in Rust"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/fst", "repo": "BurntSushi/fst", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:14.679446+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:53:29.958719+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a8bd07388667a05da823cd80cbb485bb756d4d9144cfff0a393f9e437b625ccf", "fetched_at": "2026-08-28T04:06:14.679446+00:00", "kind": "readme", "missing": false, "url": "https://github.com/BurntSushi/fst"}, {"content_hash": "25c173e9ede828b10675c1591145b8a803ca3322d5cccbb099d56aa9c3dab2a4", "fetched_at": "2026-08-29T10:33:30.819341+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/fst"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4016, "days_push": 707, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}