{"id":"stream-version-is-event-count","text":"`stream_version()` returns the count of events in a stream (not the latest `event_id`), and `expected_version` checks against this count for optimistic concurrency","truth_value":"IN","source":"entries/2026/05/29/event-sourcing-store-event_store.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"stream-version-is-event-count","truth_value":"IN","reason":"premise"}]}}