{"id":"persist-event-per-call-open","text":"The persist file is opened in append mode and closed on every single `_persist_event` call, not held open across the store's lifetime — safe but incurs per-event open/close overhead.","truth_value":"IN","source":"entries/2026/05/29/event-sourcing-store-event_store-_persist_event.md","source_url":"","source_hash":"","justifications":[],"dependents":["event-store-append-is-not-crash-consistent"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"persist-event-per-call-open","truth_value":"IN","reason":"premise"}]}}