{
  "schema_version": 2,
  "status": "validated",
  "generated_at_utc": "2026-08-03T07:09:18.244283Z",
  "source_run": "20260803T070042Z",
  "methodology": {
    "workload": "durable full event history plus latest spatial index",
    "semantic_profile": "durable_full_history_plus_latest_spatial_index",
    "single_node": true,
    "single_client": true,
    "warmup_trials_excluded": 2,
    "measured_trials": 5,
    "stability_threshold_cv_pct": 10.0,
    "dataset": {
      "seed": 45096,
      "entity_count": 10000,
      "event_count": 100000,
      "updates_per_entity": 10,
      "cluster_size": 250,
      "radius_m": 3000.0,
      "batch_size": 1000,
      "lookup_count": 2000,
      "radius_query_count": 500,
      "query_warmup": 100,
      "semantic_profile": "durable_full_history_plus_latest_spatial_index"
    },
    "server_cpus": "0-3",
    "client_cpus": "4-7",
    "archerdb_runtime_profile": "lite;cache_grid=128MiB;ram_index=64MiB;cache_geo_events=64MiB;memory_lsm_manifest=16MiB;memory_lsm_compaction=128MiB",
    "durability": {
      "ArcherDB": "successful single-replica SDK upsert committed before return",
      "PostgreSQL + PostGIS": "fsync=on; synchronous_commit=on; full_page_writes=on",
      "Valkey": "appendonly=yes; appendfsync=always; RDB snapshots disabled"
    },
    "retention_and_indexing": {
      "ArcherDB": "every event appended to S2-keyed Forest LSM; latest RAM index maintained",
      "PostgreSQL + PostGIS": "every event inserted into GiST-indexed geo_history; geo_latest maintained",
      "Valkey": "every event stored in history GEO + metadata; latest GEO + pointer maintained atomically"
    }
  },
  "versions": {
    "ArcherDB": {
      "product": "ArcherDB",
      "git_commit": "623b698f6ca2730bcf95557f8f2552214c0cd054",
      "config": "lite-lab45-fixed-cache"
    },
    "PostgreSQL + PostGIS": {
      "product": "PostgreSQL + PostGIS",
      "postgresql": "17.5 (Debian 17.5-1.pgdg110+1)",
      "postgis": "3.5.2",
      "config": "fsync=on; synchronous_commit=on; full_page_writes=on"
    },
    "Valkey": {
      "product": "Valkey",
      "valkey": "9.1.1",
      "config": "appenddirname=appendonlydir; appendfilename=appendonly.aof; appendfsync=always; appendonly=yes"
    }
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  "quality": {
    "measured_trials": 15,
    "all_status_pass": true,
    "latest_records_checked": 1500,
    "radius_queries_checked": 7500,
    "competitor_history_records_counted": 1000000,
    "competitor_latest_records_counted": 100000,
    "container_oom_events": 0,
    "container_restarts": 0,
    "single_dataset_fingerprint": true
  },
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    "archerdb_vs_valkey_ingest_ratio": 1.7599649450183028,
    "archerdb_ingest_lead_over_valkey_pct": 75.99649450183028
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    "latest_position_lookup": "context_only",
    "latest_radius_query_ids": "context_only",
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