diff --git a/bot/handlers.go b/bot/handlers.go
index 6b8f2f1..ab741df 100644
--- a/bot/handlers.go
+++ b/bot/handlers.go
@@ -135,7 +135,7 @@ func saveCmd(ctx *ext.Context, update *ext.Update) error {
 }
 
 func handleFileMessage(ctx *ext.Context, update *ext.Update) error {
-	logger.L.Debug("Got media: ", update.EffectiveMessage.Media.TypeName())
+	logger.L.Trace("Got media: ", update.EffectiveMessage.Media.TypeName())
 	supported, err := supportedMediaFilter(update.EffectiveMessage)
 	if err != nil {
 		return err
@@ -226,7 +226,7 @@ func handleFileMessage(ctx *ext.Context, update *ext.Update) error {
 func AddToQueue(ctx *ext.Context, update *ext.Update) error {
 	args := strings.Split(string(update.CallbackQuery.Data), " ")
 	messageID, _ := strconv.Atoi(args[1])
-	logger.L.Debugf("Got add to queue: chatID: %d, messageID: %d, storage: %s", update.EffectiveChat().GetID(), messageID, args[2])
+	logger.L.Trace("Got add to queue: chatID: %d, messageID: %d, storage: %s", update.EffectiveChat().GetID(), messageID, args[2])
 	record, err := dao.GetReceivedFileByChatAndMessageID(update.EffectiveChat().GetID(), messageID)
 	if err != nil {
 		logger.L.Errorf("Failed to get received file: %s", err)
diff --git a/common/cache.go b/common/cache.go
index 7916a37..5a9ffe7 100644
--- a/common/cache.go
+++ b/common/cache.go
@@ -23,10 +23,6 @@ func initCache() {
 	Cache = &CommonCache{cache: freecache.NewCache(10 * 1024 * 1024)}
 }
 
-func GetCache() *CommonCache {
-	return Cache
-}
-
 func (c *CommonCache) Get(key string, value *types.File) error {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
diff --git a/common/common.go b/common/common.go
index 3813ecc..f15d177 100644
--- a/common/common.go
+++ b/common/common.go
@@ -1,6 +1,5 @@
 package common
 
 func Init() {
-	initClient()
 	initCache()
 }
diff --git a/common/os.go b/common/os.go
index c97d55f..255458e 100644
--- a/common/os.go
+++ b/common/os.go
@@ -9,20 +9,6 @@ import (
 	"github.com/krau/SaveAny-Bot/logger"
 )
 
-// 创建文件, 自动创建目录
-func MkFile(path string, data []byte) error {
-	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(path, data, os.ModePerm)
-}
-
-func FileExists(path string) bool {
-	_, err := os.Stat(path)
-	return err == nil
-}
-
 // 删除文件, 并清理空目录. 如果文件不存在则返回 nil
 func PurgeFile(path string) error {
 	if err := os.Remove(path); err != nil {
@@ -60,24 +46,3 @@ func RemoveEmptyDirectories(dirPath string) error {
 	}
 	return nil
 }
-
-// 在指定时间后删除和清理文件 (定时器)
-func PurgeFileAfter(path string, td time.Duration) {
-	_, err := os.Stat(path)
-	if err != nil {
-		logger.L.Errorf("Failed to create timer for %s: %s", path, err)
-		return
-	}
-	logger.L.Debugf("Purge file after %s: %s", td, path)
-	time.AfterFunc(td, func() {
-		PurgeFile(path)
-	})
-}
-
-func MkCache(path string, data []byte, td time.Duration) {
-	if err := MkFile(path, data); err != nil {
-		logger.L.Errorf("failed to save cache file: %s", err)
-	} else {
-		go PurgeFileAfter(path, td)
-	}
-}
diff --git a/common/req.go b/common/req.go
deleted file mode 100644
index e0a5926..0000000
--- a/common/req.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package common
-
-import (
-	"path/filepath"
-	"time"
-
-	"github.com/imroc/req/v3"
-	"github.com/krau/SaveAny-Bot/config"
-)
-
-var ReqClient *req.Client
-
-func initClient() {
-	ReqClient = req.NewClient().SetOutputDirectory(config.Cfg.Temp.BasePath).SetTimeout(86400 * time.Second)
-}
-
-func GetCacheFilePath(filename string) string {
-	return filepath.Join(config.Cfg.Temp.BasePath, filename)
-}
diff --git a/core/core.go b/core/core.go
index d213b0b..497450f 100644
--- a/core/core.go
+++ b/core/core.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"path/filepath"
 	"time"
 
 	"github.com/celestix/gotgproto/ext"
@@ -70,7 +71,7 @@ func processPendingTask(task *types.Task) error {
 	}
 	defer readCloser.Close()
 
-	dest, err := os.Create(common.GetCacheFilePath(task.FileName()))
+	dest, err := os.Create(filepath.Join(config.Cfg.Temp.BasePath, task.File.FileName))
 	if err != nil {
 		return fmt.Errorf("Failed to create file: %w", err)
 	}
diff --git a/storage/webdav/webdav.go b/storage/webdav/webdav.go
index add6514..e7dc7a1 100644
--- a/storage/webdav/webdav.go
+++ b/storage/webdav/webdav.go
@@ -32,7 +32,7 @@ func (w *Webdav) Init() {
 }
 
 func (w *Webdav) Save(ctx context.Context, filePath, storagePath string) error {
-	storagePath = filepath.Join(basePath, storagePath)
+	storagePath = basePath + "/" + storagePath
 	if err := Client.MkdirAll(filepath.Dir(storagePath), os.ModePerm); err != nil {
 		logger.L.Errorf("Failed to create directory %s: %v", filepath.Dir(storagePath), err)
 		return errors.New("webdav: failed to create directory")