*

internal/transport/grpc/grpc.go

@@ -113,7 +113,7 @@ func (s *AuthDBServer) Registration(ctx context.Context, req *api.RegistrationRe
 	}
 
 	//
-	log.Printf("send code %s to %s ...", user.msg.Code, user.msg.Email)
+	log.Printf("publication code %s to %s ...", user.msg.Code, user.msg.Email)
 
 	//
 	err := s.kafkaWriter.WriteMessage([]byte(user.Login), value)
@@ -124,7 +124,7 @@ func (s *AuthDBServer) Registration(ctx context.Context, req *api.RegistrationRe
 	}
 
 	//
-	log.Printf("send code %s to %s completed", user.msg.Code, user.msg.Email)
+	log.Printf("publication code %s to %s completed", user.msg.Code, user.msg.Email)
 
 	return &api.RegistrationResponse{
 		Code:  user.msg.Code,

internal/transport/kafka/kafka_writer.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"net"
 	"strconv"
+	"time"
 
 	"github.com/segmentio/kafka-go"
 )
@@ -20,9 +21,10 @@ func NewWriter(ctx context.Context, topic string, address ...string) *KafkaWrite
 	s := &KafkaWriter{
 		ctx: ctx,
 		writer: &kafka.Writer{
-			Topic:    topic,
-			Balancer: &kafka.LeastBytes{},
-			Addr:     kafka.TCP(address...),
+			Topic:           topic,
+			Balancer:        &kafka.LeastBytes{},
+			WriteBackoffMax: time.Millisecond * 100,
+			Addr:            kafka.TCP(address...),
 		},
 		first: address[0],
 		topic: topic,