diff --git a/server/dao/file.go b/server/dao/file.go
index 10b82fe..646c278 100644
--- a/server/dao/file.go
+++ b/server/dao/file.go
@@ -74,7 +74,7 @@ func GetUploadingFilesOlderThan(time time.Time) ([]model.UploadingFile, error) {
 	return files, nil
 }
 
-func CreateFile(filename string, description string, resourceID uint, storageID *uint, storageKey string, redirectUrl string, size int64) (*model.File, error) {
+func CreateFile(filename string, description string, resourceID uint, storageID *uint, storageKey string, redirectUrl string, size int64, userID uint) (*model.File, error) {
 	if storageID == nil && redirectUrl == "" {
 		return nil, errors.New("storageID and redirectUrl cannot be both empty")
 	}
@@ -87,6 +87,7 @@ func CreateFile(filename string, description string, resourceID uint, storageID
 		RedirectUrl: redirectUrl,
 		StorageKey:  storageKey,
 		Size:        size,
+		UserID:      userID,
 	}
 	if err := db.Create(f).Error; err != nil {
 		return nil, err
diff --git a/server/dao/statistic.go b/server/dao/statistic.go
index 6005348..d2dbad3 100644
--- a/server/dao/statistic.go
+++ b/server/dao/statistic.go
@@ -15,7 +15,9 @@ func SetStatistic(key string, value int64) error {
 
 func GetStatistic(key string) int64 {
 	statistic := &model.Statistic{}
-	if err := db.Where("key = ?", key).First(statistic).Error; err != nil {
+	if err := db.Where(&model.Statistic{
+		Key: key,
+	}).First(statistic).Error; err != nil {
 		return 0
 	}
 	return statistic.Value
diff --git a/server/service/file.go b/server/service/file.go
index 14fe144..9d7d030 100644
--- a/server/service/file.go
+++ b/server/service/file.go
@@ -232,7 +232,7 @@ func FinishUploadingFile(uid uint, fid uint) (*model.FileView, error) {
 		return nil, model.NewInternalServerError("failed to finish uploading file. please re-upload")
 	}
 
-	dbFile, err := dao.CreateFile(uploadingFile.Filename, uploadingFile.Description, uploadingFile.TargetResourceID, &uploadingFile.TargetStorageID, "", "", uploadingFile.TotalSize)
+	dbFile, err := dao.CreateFile(uploadingFile.Filename, uploadingFile.Description, uploadingFile.TargetResourceID, &uploadingFile.TargetStorageID, "", "", uploadingFile.TotalSize, uid)
 	if err != nil {
 		log.Error("failed to create file in db: ", err)
 		_ = os.Remove(resultFilePath)
@@ -305,7 +305,7 @@ func CreateRedirectFile(uid uint, filename string, description string, resourceI
 		return nil, model.NewUnAuthorizedError("user cannot upload file")
 	}
 
-	file, err := dao.CreateFile(filename, description, resourceID, nil, "", redirectUrl, 0)
+	file, err := dao.CreateFile(filename, description, resourceID, nil, "", redirectUrl, 0, uid)
 	if err != nil {
 		log.Error("failed to create file in db: ", err)
 		return nil, model.NewInternalServerError("failed to create file in db")
@@ -397,6 +397,7 @@ func DownloadFile(ip, fid, cfToken string) (string, string, error) {
 		log.Info("cf token verification failed")
 		return "", "", model.NewRequestError("cf token verification failed")
 	}
+	log.Info("File download request from: " + ip)
 	downloads, _ := ipDownloads.Load(ip)
 	if downloads == nil {
 		ipDownloads.Store(ip, 1)