{"id":"metrics-series-sorted-invariant","text":"Every time series in `_data` is maintained in sorted timestamp order; `ingest` (bisect insertion), `downsample` (re-sort), and `apply_retention` (bisect truncation) all preserve this invariant","truth_value":"IN","source":"entries/2026/06/05/metrics-monitoring-and-alerting-metrics.md","source_url":"","source_hash":"","justifications":[],"dependents":["metrics-sorted-invariant-survives-downsampling"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"metrics-series-sorted-invariant","truth_value":"IN","reason":"premise"}]}}