{"id":"wal-batch-single-file","text":"`append_batch` writes the entire batch buffer in one `_fd.write` call before `_maybe_rotate`, so a batch never spans two WAL files under normal operation","truth_value":"IN","source":"entries/2026/05/29/topic-wal-recovery-semantics.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"wal-batch-single-file","truth_value":"IN","reason":"premise"}]}}