*

internal/config/config.go

@@ -14,9 +14,8 @@ type smtpConfig struct {
 }
 
 type kafkaConfig struct {
-	Port      int    `envconfig:"KAFKA_PORT"`
-	Partition int    `envconfig:"KAFKA_PARTITION"`
-	Host      string `envconfig:"KAFKA_HOST"`
+	Port int    `envconfig:"KAFKA_PORT"`
+	Host string `envconfig:"KAFKA_HOST"`
 }
 
 // ...

internal/postman.go

@@ -3,10 +3,12 @@ package postman
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"log"
 	"net"
 	"strconv"
 	"test3k/authPostman/internal/config"
+	"time"
 
 	// smtp "test3k/authPostman/internal/smtp"
 
@@ -31,10 +33,11 @@ func NewServer(ctx context.Context, config *config.Config, topic string) *AuthPo
 		kafkaReader: kafka.NewReader(kafka.ReaderConfig{
 			Topic:   topic,
 			Brokers: []string{net.JoinHostPort(config.Kafka.Host, strconv.Itoa(config.Kafka.Port))},
-			// GroupID:   fmt.Sprintf("consumer-group-%d", config.Kafka.Partition),
-			Partition: config.Kafka.Partition,
-			MinBytes:  10e3, // 10KB
-			MaxBytes:  10e6, // 10MB
+			GroupID: fmt.Sprintf("consumer-group-%s", topic),
+			// Partition:      0,
+			MinBytes:       10e3, // 10KB
+			MaxBytes:       10e6, // 10MB
+			ReadBackoffMax: time.Millisecond * 100,
 		}),
 	}
 }
@@ -45,7 +48,7 @@ func (s *AuthPostmanServer) GracefulStop() error {
 
 func (s *AuthPostmanServer) ReadMessage(offset int64) error {
 	// ...
-	s.kafkaReader.SetOffset(offset)
+	// s.kafkaReader.SetOffset(offset)
 
 	//
 	for {