Not Rewindable

Mark a projection as not rewindable (forward-only) using [NotRewindable]:

[NotRewindable]
public record AuditLog(
    [Key]
    Guid Id,

    [SetFrom<AuditEvent>]
    string Message,

    [SetFrom<AuditEvent>]
    DateTimeOffset Timestamp);

When to use

• Audit logs or append-only data
• Projections that should never be replayed from scratch
• Time-sensitive data where replay would be incorrect

Best practices

• Use for append-only scenarios where historical replay would be problematic
• Consider carefully as this removes the ability to rebuild the projection from scratch
• Ensure you have alternative recovery strategies if the projection becomes corrupted