diff --git a/internal/base/conf/conf.go b/internal/base/conf/conf.go
index b0401e1e..b441c471 100644
--- a/internal/base/conf/conf.go
+++ b/internal/base/conf/conf.go
@@ -60,6 +60,7 @@ func ReadConfig(configFilePath string) (c *AllConfig, err error) {
 func RewriteConfig(configFilePath string, allConfig *AllConfig) error {
 	buf := bytes.Buffer{}
 	enc := yaml.NewEncoder(&buf)
+	defer enc.Close()
 	enc.SetIndent(2)
 	if err := enc.Encode(allConfig); err != nil {
 		return err
diff --git a/internal/cli/dump.go b/internal/cli/dump.go
index 7b84d862..3696a432 100644
--- a/internal/cli/dump.go
+++ b/internal/cli/dump.go
@@ -15,6 +15,7 @@ func DumpAllData(dataConf *data.Database, dumpDataPath string) error {
 	if err != nil {
 		return err
 	}
+	defer db.Close()
 	if err = db.Ping(); err != nil {
 		return err
 	}
diff --git a/internal/cli/install_check.go b/internal/cli/install_check.go
index 6cb25987..a8926060 100644
--- a/internal/cli/install_check.go
+++ b/internal/cli/install_check.go
@@ -23,6 +23,7 @@ func CheckDBConnection(dataConf *data.Database) bool {
 		fmt.Printf("connection database failed: %s\n", err)
 		return false
 	}
+	defer db.Close()
 	if err = db.Ping(); err != nil {
 		fmt.Printf("connection ping database failed: %s\n", err)
 		return false
@@ -38,6 +39,7 @@ func CheckDBTableExist(dataConf *data.Database) bool {
 		fmt.Printf("connection database failed: %s\n", err)
 		return false
 	}
+	defer db.Close()
 	if err = db.Ping(); err != nil {
 		fmt.Printf("connection ping database failed: %s\n", err)
 		return false
diff --git a/internal/migrations/migrations.go b/internal/migrations/migrations.go
index 4a2e2140..2c87b1ac 100644
--- a/internal/migrations/migrations.go
+++ b/internal/migrations/migrations.go
@@ -117,6 +117,7 @@ func Migrate(debug bool, dbConf *data.Database, cacheConf *data.CacheConf, upgra
 		fmt.Println("new database failed: ", err.Error())
 		return err
 	}
+	defer engine.Close()
 
 	currentDBVersion, err := GetCurrentDBVersion(engine)
 	if err != nil {
diff --git a/internal/service/uploader/upload.go b/internal/service/uploader/upload.go
index 88ca9d5f..f21b459a 100644
--- a/internal/service/uploader/upload.go
+++ b/internal/service/uploader/upload.go
@@ -87,18 +87,19 @@ func (us *uploaderService) UploadAvatarFile(ctx *gin.Context) (url string, err e
 
 	// max size
 	ctx.Request.Body = http.MaxBytesReader(ctx.Writer, ctx.Request.Body, 5*1024*1024)
-	_, file, err := ctx.Request.FormFile("file")
+	file, fileHeader, err := ctx.Request.FormFile("file")
 	if err != nil {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
-	fileExt := strings.ToLower(path.Ext(file.Filename))
+	file.Close()
+	fileExt := strings.ToLower(path.Ext(fileHeader.Filename))
 	if _, ok := plugin.DefaultFileTypeCheckMapping[plugin.UserAvatar][fileExt]; !ok {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
 
 	newFilename := fmt.Sprintf("%s%s", uid.IDStr12(), fileExt)
 	avatarFilePath := path.Join(avatarSubPath, newFilename)
-	return us.uploadFile(ctx, file, avatarFilePath)
+	return us.uploadFile(ctx, fileHeader, avatarFilePath)
 }
 
 func (us *uploaderService) AvatarThumbFile(ctx *gin.Context, fileName string, size int) (url string, err error) {
@@ -165,18 +166,19 @@ func (us *uploaderService) UploadPostFile(ctx *gin.Context) (
 
 	// max size
 	ctx.Request.Body = http.MaxBytesReader(ctx.Writer, ctx.Request.Body, 10*1024*1024)
-	_, file, err := ctx.Request.FormFile("file")
+	file, fileHeader, err := ctx.Request.FormFile("file")
 	if err != nil {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
-	fileExt := strings.ToLower(path.Ext(file.Filename))
+	defer file.Close()
+	fileExt := strings.ToLower(path.Ext(fileHeader.Filename))
 	if _, ok := plugin.DefaultFileTypeCheckMapping[plugin.UserPost][fileExt]; !ok {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
 
 	newFilename := fmt.Sprintf("%s%s", uid.IDStr12(), fileExt)
 	avatarFilePath := path.Join(postSubPath, newFilename)
-	return us.uploadFile(ctx, file, avatarFilePath)
+	return us.uploadFile(ctx, fileHeader, avatarFilePath)
 }
 
 func (us *uploaderService) UploadBrandingFile(ctx *gin.Context) (
@@ -191,18 +193,19 @@ func (us *uploaderService) UploadBrandingFile(ctx *gin.Context) (
 
 	// max size
 	ctx.Request.Body = http.MaxBytesReader(ctx.Writer, ctx.Request.Body, 10*1024*1024)
-	_, file, err := ctx.Request.FormFile("file")
+	file, fileHeader, err := ctx.Request.FormFile("file")
 	if err != nil {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
-	fileExt := strings.ToLower(path.Ext(file.Filename))
+	file.Close()
+	fileExt := strings.ToLower(path.Ext(fileHeader.Filename))
 	if _, ok := plugin.DefaultFileTypeCheckMapping[plugin.AdminBranding][fileExt]; !ok {
 		return "", errors.BadRequest(reason.RequestFormatError).WithError(err)
 	}
 
 	newFilename := fmt.Sprintf("%s%s", uid.IDStr12(), fileExt)
 	avatarFilePath := path.Join(brandingSubPath, newFilename)
-	return us.uploadFile(ctx, file, avatarFilePath)
+	return us.uploadFile(ctx, fileHeader, avatarFilePath)
 }
 
 func (us *uploaderService) uploadFile(ctx *gin.Context, file *multipart.FileHeader, fileSubPath string) (