diff --git a/pkg/node/transport.go b/pkg/node/transport.go
index 85dcad9..e212b0a 100644
--- a/pkg/node/transport.go
+++ b/pkg/node/transport.go
@@ -60,7 +60,9 @@ type MessageDeduplicator struct {
 	ttl  time.Duration
 }
 
-// NewMessageDeduplicator creates a deduplicator with specified TTL
+// dedup := node.NewMessageDeduplicator(5 * time.Minute)
+// dedup.Mark(msg.ID)
+// if dedup.IsDuplicate(msg.ID) { continue }
 func NewMessageDeduplicator(ttl time.Duration) *MessageDeduplicator {
 	d := &MessageDeduplicator{
 		seen: make(map[string]time.Time),