namespace ErsatzTV.Core.Domain;

/// <summary>
///     A root aggregate that carries an integer optimistic-concurrency token (issue #253).
///     The token is exposed as a strong <c>ETag</c> on the aggregate's GET, checked against a
///     PUT's <c>If-Match</c> header (mismatch → 412 Precondition Failed), and bumped on every
///     successful write so a stale second writer is rejected and every other client's ETag rotates.
/// </summary>
public interface IVersionedAggregate
{
    int Version { get; set; }
}