diff --git a/iniDataForLinux b/iniDataForLinux
index e8e27cb..110a4e2 100755
Binary files a/iniDataForLinux and b/iniDataForLinux differ
diff --git a/iniDataForMacOs b/iniDataForMacOs
index 9cd545a..8002227 100755
Binary files a/iniDataForMacOs and b/iniDataForMacOs differ
diff --git a/main.go b/main.go
index 99fb917..1c21e81 100644
--- a/main.go
+++ b/main.go
@@ -78,19 +78,17 @@ func main() {
 			iniLog()
 			fmt.Print("查询批次状态...\n")
 			queryBatchState()
-
 		case <-notification.C:
 			iniLog()
-			applogger.Info("开始清除历史数据")
-			delData()
+			go delData()
 			notification.Reset(time.Until(nextNotificationTime()))
-			applogger.Info("清除历史数据完成")
 		}
 	}
 }
 
 // 删除历史数据和历史重复数据
 func delData() {
+	applogger.Info("开始清除历史数据")
 	// 删除15天前的批次数据
 	err := deleteOldData(&BatcheData{}, dataExpirationDays)
 	handleError(err, "删除15天前的批次数据失败")
@@ -98,7 +96,7 @@ func delData() {
 	// 删除15天前的批次数据重复日志
 	err = deleteOldData(&BatchDataDuplicateLog{}, dataExpirationDays)
 	handleError(err, "删除15天前的批次数据重复日志失败")
-
+	applogger.Info("清除历史数据完成")
 }
 
 // 删除15天前的数据
@@ -107,14 +105,17 @@ func deleteOldData(model interface{}, daysAgo int) error {
 	totalRowsAffected := int64(0)
 	db, err := connectToDB()
 	if err != nil {
+		applogger.Error("连接数据库失败: ", err)
 		return fmt.Errorf("连接数据库失败: %w", err)
 	}
 	threshold := time.Now().AddDate(0, 0, -daysAgo)
 
 	for {
 		tx := db.Begin()
+		applogger.Info("开始事务")
 		defer func() {
 			if r := recover(); r != nil {
+				applogger.Error("异常，回滚事务: ", r)
 				tx.Rollback()
 			}
 		}()
@@ -130,21 +131,26 @@ func deleteOldData(model interface{}, daysAgo int) error {
 		}
 
 		if len(ids) == 0 {
+			applogger.Info("没有找到符合条件的数据，退出循环")
 			break
 		}
 
 		result = tx.Where("id IN (?)", ids).Delete(model)
 		if result.Error != nil {
+			applogger.Error("删除操作失败，回滚事务: ", result.Error)
 			tx.Rollback()
 			return result.Error
 		}
 
 		if err := tx.Commit().Error; err != nil {
+			applogger.Error("事务提交失败: ", err)
 			return err
 		}
+		applogger.Info("事务提交成功")
 
 		totalRowsAffected += result.RowsAffected
 		if len(ids) < batchSize {
+			applogger.Info("已处理所有符合条件的数据，退出循环")
 			break
 		}
 	}
@@ -153,6 +159,7 @@ func deleteOldData(model interface{}, daysAgo int) error {
 	modelName := reflect.TypeOf(model).Elem().Name()
 
 	applogger.Info(fmt.Sprintf("执行删除%v用时%s成功删除数据%d", modelName, elapsed.String(), totalRowsAffected))
+	closeDb(db)
 	return nil
 }
 
@@ -392,7 +399,11 @@ func downloadDecompression() {
 			applogger.Error(body)
 			SendEmail(subject, body) //发送邮件
 		}
-		defer sftpClient.Close()
+		defer func() {
+			sftpClient.Close()
+			sshClient.Close()
+		}()
+
 		files, err := sftpClient.ReadDir(sftpDir)
 		if err != nil {
 			body := fmt.Sprintf("sftp目录%s不存在, 错误信息：%v", sftpDir, err)
@@ -403,7 +414,8 @@ func downloadDecompression() {
 		fmt.Printf("共%d个文件\n", len(files))
 
 		sort.Sort(FileSorter(files))
-		//设置限速
+
+		// 限制下载速度为 15MB/s
 		limiter := rate.NewLimiter(rate.Limit(rateLimiter*1024*1024), int(rateLimiter*1024*1024))
 		for _, file := range files {
 			processingStatus := -1
@@ -559,6 +571,7 @@ func downloadDecompression() {
 	}
 }
 
+// 批次信息入库
 func batchInsert(fileName string, isLastCall bool, excludedFilename string) int {
 	start := time.Now()
 	db, err := connectToDB()
@@ -628,6 +641,7 @@ func batchInsert(fileName string, isLastCall bool, excludedFilename string) int
 
 	applogger.Info(fmt.Sprintf("%s（批次文件）入库完成", fileName))
 	applogger.Info(fmt.Sprintf("%s（批次文件）执行时间%s   插入批次次数：%d", fileName, elapsed, batchRows))
+	closeDb(db)
 	return 0
 
 }
@@ -1002,9 +1016,11 @@ func batchDataInsert(fileName string, lastCallKeys map[string]bool, excludedFile
 			SendEmail(subject, body) //发送邮件
 			applogger.Info(fmt.Sprintf("%s（数据包） 入库完成", fileName))
 			applogger.Info(fmt.Sprintf("%s（数据包）执行时间:%s  插入数据:%d条  过滤数数：%d条", fileName, elapsed, count, bi))
+			closeDb(db)
 			return 0
 		} else { //如果没有查询到批次信息，跳过处理
 			applogger.Error(fmt.Sprintf("未查询到批次数据，文件名：%s，截取批次标识：%s", fileName, dataFileName))
+			closeDb(db)
 			return -1
 		}
 	}
@@ -1055,6 +1071,7 @@ func queryBatchState() {
 			handleError(fmt.Errorf("返回不为0"), fmt.Sprintf("查询批次状态失败：%s", string(jsonStr)))
 		}
 	}
+	closeDb(db)
 }
 
 func createUpdatesMap(retobj map[string]interface{}) map[string]interface{} {
@@ -1093,30 +1110,6 @@ func handleError(err error, errMsg string) {
 }
 
 func connectToDB() (*gorm.DB, error) {
-	/**
-	dsn := "sqlserver://" + dbUser + ":" + dbPassword + "@" + dbAddress + "?database=" + dbName + "&charset=utf8mb4"
-	var db *gorm.DB
-	var err error
-	attempt := 1
-	maxAttempts := 5
-	backoff := time.Second
-	logger := logger.Default.LogMode(logger.Error) //Silent、Error、Warn、Info
-	for {
-		db, err = gorm.Open(sqlserver.Open(dsn), &gorm.Config{Logger: logger, SkipDefaultTransaction: true})
-		if err == nil {
-			break
-		}
-		if attempt >= maxAttempts {
-			//applogger.Error(fmt.Sprintf("数据库连接失败，错误信息%v", err))
-			handleError(err, "数据库连接失败，错误信息")
-			return nil, err
-		}
-		time.Sleep(backoff)
-		backoff *= 2
-		attempt++
-	}
-	*/
-
 	dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local", dbUser, dbPassword, dbAddress, dbPort, dbName)
 	var db *gorm.DB
 	var err error
@@ -1137,9 +1130,32 @@ func connectToDB() (*gorm.DB, error) {
 		backoff *= 2
 		attempt++
 	}
+	// 获取底层 *sql.DB 实例
+	sqlDB, err := db.DB()
+	if err != nil {
+		return nil, err
+	}
+
+	// 设置最大连接数
+	sqlDB.SetMaxOpenConns(dbMaxOpenConns)
+
+	// 设置最大空闲连接数
+	sqlDB.SetMaxIdleConns(dbMaxIdleConns)
+
+	// 设置空闲连接的最长生命周期
+	sqlDB.SetConnMaxLifetime(time.Duration(dbConnMaxLifetime) * time.Minute)
 	return db, nil
 }
 
+func closeDb(db *gorm.DB) {
+	sqlDB, err := db.DB()
+	if err != nil {
+		handleError(err, "关闭数据库连接失败")
+		return
+	}
+	sqlDB.Close()
+}
+
 func fileExists(filename string) bool {
 	info, err := os.Stat(filename)
 	if os.IsNotExist(err) {
@@ -1225,6 +1241,9 @@ func iniConfi() {
 		dataExpirationDays = 14
 		delDataSize = 60000
 		rateLimiter = 1
+		dbMaxOpenConns = 500
+		dbMaxIdleConns = 5
+		dbConnMaxLifetime = 10
 
 	case "prod":
 		//fmt.Print("正式环境配置已生效\n")
@@ -1253,9 +1272,12 @@ func iniConfi() {
 		token = "7100178600777091" //7100477930234217
 		lastCallPath = "RawData/LastCall"
 		verifySignatureKey = "Lzxf6asgwFRTsANZ8gkXJnP3EmOyNO#&"
-		dataExpirationDays = 14
+		dataExpirationDays = 1
 		delDataSize = 60000
-		rateLimiter = 10
+		rateLimiter = 15
+		dbMaxOpenConns = 500
+		dbMaxIdleConns = 5
+		dbConnMaxLifetime = 60
 
 	default:
 		panic(fmt.Errorf("无效的运行模式: %s", env))
@@ -1346,6 +1368,9 @@ var ( //初始化变量
 	dataExpirationDays  int
 	delDataSize         int
 	rateLimiter         uint
+	dbMaxOpenConns      int
+	dbMaxIdleConns      int
+	dbConnMaxLifetime   int
 )
 
 type Batch struct {