{"database": "audit", "table": "source_truth", "rows": [["cloudflare:audit:backfill", 10792, null, null, "2026-07-13T05:30:06Z", "bounded_known", "v1 floor 2025-03-11 (CF retains older but v1 endpoint returns 0 for 2025-05 to 2026-01; gap unrecoverable per CF v1 retention reliability). v2 floor 2026-03-10 GA; Beta floor 2026-02-08 expired 2026-04-09 per published CF v2 retention policy. v2 covers ~95% CF products vs v1 ~75%; per-month overlap shows v2 captures 6-11% more events than v1. Both coexist with same source name, distinct correlation_id formats (cf:<id> v2, raw UUID v1). Full backfill 2026-05-20.", "cloudflare:audit:backfill", null, null, null, "poll", 1440, "cloudflare:audit:poller"]], "columns": ["source", "api_total", "api_oldest", "api_newest", "measured_at", "method", "notes", "event_source", "event_category", "live_event_source", "live_event_category", "mode", "freshness_sla_minutes", "heartbeat_source"], "primary_keys": ["source"], "primary_key_values": ["cloudflare:audit:backfill"], "units": {}, "query_ms": 23.89666996896267}