update

db.go

@@ -18,9 +18,12 @@ func connectToDB() {
 		DB_HOST, DB_USER, DB_PASSWD, DB_NAME, DB_PORT,
 	)
 	config := &gorm.Config{
-		Logger:                 logger.Default,
+		Logger:                 logger.Discard,
 		SkipDefaultTransaction: true,
 	}
+	if flagDev {
+		config.Logger = logger.Default
+	}
 	for {
 		db, err := gorm.Open(postgres.New(postgres.Config{
 			DSN: dsn, // data source name