diff --git a/main.go b/main.go
index 4f90056..e5fc0bd 100644
--- a/main.go
+++ b/main.go
@@ -19,7 +19,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"reflect"
 	"regexp"
 	"sort"
 	"strconv"
@@ -111,19 +110,19 @@ func deleteOldData(model interface{}, daysAgo int) error {
 	}
 	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()
-			}
-		}()
-		if err := tx.Error; err != nil {
-			return err
+	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()
 		}
+	}()
+	if err := tx.Error; err != nil {
+		return err
+	}
 
+	for {
 		var ids []int
 		result := tx.Model(model).Where("created_at < ?", threshold).Limit(delDataSize).Pluck("id", &ids)
 		if result.Error != nil {
@@ -143,24 +142,17 @@ func deleteOldData(model interface{}, daysAgo int) error {
 			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
-		}
+		applogger.Info(fmt.Sprintf("删除 %d 条数据", result.RowsAffected))
 	}
-	time.Sleep(time.Second)
-	elapsed := time.Since(start)
-	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)
+	if err := tx.Commit().Error; err != nil {
+		applogger.Error("提交事务失败: ", err)
+		return fmt.Errorf("提交事务失败: %w", err)
+	}
+
+	elapsed := time.Since(start)
+	applogger.Info(fmt.Sprintf("删除 %d 条数据，共耗时 %s", totalRowsAffected, elapsed))
 	return nil
 }
 
@@ -1366,9 +1358,9 @@ var ( //初始化变量
 	token               string
 	lastCallPath        string
 	verifySignatureKey  string
-	dataExpirationDays  int
-	delDataSize         int
-	rateLimiter         uint
+	dataExpirationDays  int  //数据过期天数
+	delDataSize         int  //删除数据批次大小
+	rateLimiter         uint //下载限速单位	M
 	dbMaxOpenConns      int
 	dbMaxIdleConns      int
 	dbConnMaxLifetime   int