关于上游流量同步覆盖修复,以及新增redis同步迁移

internal/service/iot_card/service.go

@@ -1499,6 +1499,7 @@ func (s *Service) RefreshCardDataFromGateway(ctx context.Context, iccid string)
 // 返回本次增量值（MB），用于触发套餐扣减
 func (s *Service) calculateRefreshFlowUpdates(card *model.IotCard, gatewayFlowMB float64, now time.Time, updates map[string]any) float64 {
 	increment := gatewayFlowMB - card.LastGatewayReadingMB
+	shouldUpdateGatewayReading := true
 
 	if increment < 0 {
 		// 当前值比上次小，检查是否为上游运营商正常重置
@@ -1518,11 +1519,13 @@ func (s *Service) calculateRefreshFlowUpdates(card *model.IotCard, gatewayFlowMB
 				zap.Float64("gateway_flow", gatewayFlowMB),
 				zap.Float64("last_reading", card.LastGatewayReadingMB))
 			increment = 0
+			shouldUpdateGatewayReading = false
 		}
 	}
 
-	// 始终更新网关读数基准
-	updates["last_gateway_reading_mb"] = gatewayFlowMB
+	if shouldUpdateGatewayReading {
+		updates["last_gateway_reading_mb"] = gatewayFlowMB
+	}
 
 	// 检测跨自然月
 	currentMonthStart := time.Date(now.Year(), now.Month(), 1, 0, 0, 0, 0, now.Location())