{"adoption": {"forks": 211, "observed_at": "2026-08-28T04:06:56.809852+00:00", "stars": 2498}, "canonical_url": "https://ross.abutalabs.com/products/rpmalloc", "card": {"archived": false, "artifact_type": "library", "description": "Public domain cross platform lock free thread caching 16-byte aligned memory allocator implemented in C", "domain": ["performance", "developer-tools", "cross-platform"], "enriched": true, "function": ["concurrency", "developer-tools"], "health_score": 96, "homepage": null, "language": "C", "license": "MIT", "license_family": "permissive", "maturity": "stable", "member_repos": ["mjansson/rpmalloc"], "name": "mjansson/rpmalloc", "platform": ["windows", "cpp", "c"], "pushed_at": "2026-07-15T14:54:06+00:00", "repo": "mjansson/rpmalloc", "stars": 2498, "tags": ["memory-allocator", "lock-free", "thread-caching", "public-domain", "single-file", "linux", "macos", "ios", "android"], "topics": ["concurrency", "thread", "memory", "allocator"], "urls": [], "use_cases": ["replace malloc with a faster allocator in a C/C++ application", "reduce allocation contention in multithreaded programs", "drop a single-file allocator into a game engine or performance-critical codebase", "benchmark my allocator against tcmalloc and mimalloc", "customize the memory mapping backend for an embedded or custom platform"], "what_it_is": "rpmalloc is a public domain cross-platform lock-free thread-caching memory allocator implemented in a single ~3300-line C source file with 16-byte alignment. It aims to outperform popular allocators like tcmalloc, hoard, and ptmalloc3 with low memory overhead.", "when_to_avoid": ["you need garbage collection or heap debugging/leak-detection features", "you rely on allocator-specific extensions like jemalloc's profiling APIs", "your platform lacks atomic operations or an mmap-style virtual memory API"], "when_to_choose": ["you need a fast, low-overhead allocator with minimal integration effort", "you want permissive licensing (public domain / MIT)", "your workload is multithreaded with frequent small allocations", "you want a small, readable codebase you can modify"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/rpmalloc", "repo": "mjansson/rpmalloc", "role": "main", "score": 94}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:56.809852+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:27:03.014886+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c76320c36e7c702586afeff0bdd00483a09641326167b38d236e01fb19926353", "fetched_at": "2026-08-28T04:06:56.809852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mjansson/rpmalloc"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 92, "longevity": 100, "rhythm": 93}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3575, "days_push": 49, "days_rel": 49, "gap_med": 5, "n_releases_24m": 2}, "score": 94, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}