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NotificationMetricsBehavior

Namespace: RA.Utilities.Dispatcher.Behaviors

NotificationMetricsBehavior<TNotification> is a notification behavior that measures how long each notification handler takes and warns on slow handlers.

📦 Type Definition​

public class NotificationMetricsBehavior<TNotification> : INotificationBehavior<TNotification>
    where TNotification : INotification
{
    public NotificationMetricsBehavior(ILogger<NotificationMetricsBehavior<TNotification>> logger);
}

🎯 How It Works​

  1. Logs a Debug-level marker (MetricsBehavior..).
  2. Starts a timestamp with Stopwatch.GetTimestamp() — no per-call Stopwatch allocation (the timestamp API is allocation-free).
  3. Invokes next().
  4. If the inner pipeline took over 500 ms, logs a Warning: Long running notification: {NotificationName} ({ElapsedMilliseconds}ms).

The measured result is passed through unchanged.

🚀 Usage​

builder.Services
    .AddNotification<OrderPlaced>()
    .AddDecoration<NotificationMetricsBehavior<OrderPlaced>>();

Because the behavior is generic, the auto-registration generator reports DSAG010 and skips it — register it explicitly with AddDecoration, as above.