diff --git a/app/helper/plugin.py b/app/helper/plugin.py
index 8f6132eb..ca8015b5 100644
--- a/app/helper/plugin.py
+++ b/app/helper/plugin.py
@@ -18,14 +18,14 @@ from app.db.systemconfig_oper import SystemConfigOper
 from app.log import logger
 from app.schemas.types import SystemConfigKey
 from app.utils.http import RequestUtils
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.system import SystemUtils
 from app.utils.url import UrlUtils
 
 PLUGIN_DIR = Path(settings.ROOT_PATH) / "app" / "plugins"
 
 
-class PluginHelper(metaclass=Singleton):
+class PluginHelper(metaclass=WeakSingleton):
     """
     插件市场管理，下载安装插件到本地
     """
diff --git a/app/helper/progress.py b/app/helper/progress.py
index abcb4b67..54f8d012 100644
--- a/app/helper/progress.py
+++ b/app/helper/progress.py
@@ -1,12 +1,11 @@
 from enum import Enum
-from typing import Union, Dict, Optional
+from typing import Union, Optional
 
 from app.schemas.types import ProgressKey
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 
 
-class ProgressHelper(metaclass=Singleton):
-    _process_detail: Dict[str, dict] = {}
+class ProgressHelper(metaclass=WeakSingleton):
 
     def __init__(self):
         self._process_detail = {}
diff --git a/app/helper/subscribe.py b/app/helper/subscribe.py
index 91f8347a..682378d7 100644
--- a/app/helper/subscribe.py
+++ b/app/helper/subscribe.py
@@ -8,11 +8,11 @@ from app.db.systemconfig_oper import SystemConfigOper
 from app.log import logger
 from app.schemas.types import SystemConfigKey
 from app.utils.http import RequestUtils
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.system import SystemUtils
 
 
-class SubscribeHelper(metaclass=Singleton):
+class SubscribeHelper(metaclass=WeakSingleton):
     """
     订阅数据统计/订阅分享等
     """
diff --git a/app/helper/torrent.py b/app/helper/torrent.py
index 581c8215..e650e23d 100644
--- a/app/helper/torrent.py
+++ b/app/helper/torrent.py
@@ -1,10 +1,9 @@
 import datetime
 import re
 from pathlib import Path
-from typing import Tuple, Optional, List, Union, Dict
+from typing import Tuple, Optional, List, Union, Dict, Any
 from urllib.parse import unquote
 
-from requests import Response
 from torrentool.api import Torrent
 
 from app.core.config import settings
@@ -16,17 +15,17 @@ from app.db.systemconfig_oper import SystemConfigOper
 from app.log import logger
 from app.schemas.types import MediaType, SystemConfigKey
 from app.utils.http import RequestUtils
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.string import StringUtils
 
 
-class TorrentHelper(metaclass=Singleton):
+class TorrentHelper(metaclass=WeakSingleton):
     """
     种子帮助类
     """
 
-    # 失败的种子：站点链接
-    _invalid_torrents = []
+    def __init__(self):
+        self._invalid_torrents = []
 
     def download_torrent(self, url: str,
                          cookie: Optional[str] = None,
@@ -170,7 +169,7 @@ class TorrentHelper(metaclass=Singleton):
             return "", []
 
     @staticmethod
-    def get_url_filename(req: Response, url: str) -> str:
+    def get_url_filename(req: Any, url: str) -> str:
         """
         从下载请求中获取种子文件名
         """
diff --git a/app/modules/douban/apiv2.py b/app/modules/douban/apiv2.py
index a9fcfd23..4c32e266 100644
--- a/app/modules/douban/apiv2.py
+++ b/app/modules/douban/apiv2.py
@@ -12,10 +12,10 @@ import requests
 from app.core.cache import cached
 from app.core.config import settings
 from app.utils.http import RequestUtils
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 
 
-class DoubanApi(metaclass=Singleton):
+class DoubanApi(metaclass=WeakSingleton):
     _urls = {
         # 搜索类
         # sort=U:近期热门 T:标记最多 S:评分最高 R:最新上映
@@ -151,7 +151,6 @@ class DoubanApi(metaclass=Singleton):
     _api_key2 = "0ab215a8b1977939201640fa14c66bab"
     _base_url = "https://frodo.douban.com/api/v2"
     _api_url = "https://api.douban.com/v2"
-    _session = None
 
     def __init__(self):
         self._session = requests.Session()
diff --git a/app/modules/douban/douban_cache.py b/app/modules/douban/douban_cache.py
index b0d996d3..95fc7511 100644
--- a/app/modules/douban/douban_cache.py
+++ b/app/modules/douban/douban_cache.py
@@ -10,7 +10,7 @@ from app.core.config import settings
 from app.core.meta import MetaBase
 from app.core.metainfo import MetaInfo
 from app.log import logger
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.schemas.types import MediaType
 
 lock = RLock()
@@ -19,7 +19,7 @@ CACHE_EXPIRE_TIMESTAMP_STR = "cache_expire_timestamp"
 EXPIRE_TIMESTAMP = settings.CONF.meta
 
 
-class DoubanCache(metaclass=Singleton):
+class DoubanCache(metaclass=WeakSingleton):
     """
     豆瓣缓存数据
     {
@@ -29,9 +29,6 @@ class DoubanCache(metaclass=Singleton):
         "type": MediaType
     }
     """
-    _meta_data: dict = {}
-    # 缓存文件路径
-    _meta_path: Path = None
     # TMDB缓存过期
     _tmdb_cache_expire: bool = True
 
@@ -233,3 +230,6 @@ class DoubanCache(metaclass=Singleton):
         if not cache_media_info:
             return
         self._meta_data[key]['title'] = cn_title
+
+    def __del__(self):
+        self.save()
diff --git a/app/modules/filemanager/storages/alipan.py b/app/modules/filemanager/storages/alipan.py
index e85dd422..7bd79703 100644
--- a/app/modules/filemanager/storages/alipan.py
+++ b/app/modules/filemanager/storages/alipan.py
@@ -15,7 +15,7 @@ from app.core.config import settings
 from app.log import logger
 from app.modules.filemanager import StorageBase
 from app.schemas.types import StorageSchema
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.string import StringUtils
 
 lock = threading.Lock()
@@ -29,7 +29,7 @@ class SessionInvalidException(Exception):
     pass
 
 
-class AliPan(StorageBase, metaclass=Singleton):
+class AliPan(StorageBase, metaclass=WeakSingleton):
     """
     阿里云盘相关操作
     """
@@ -43,17 +43,12 @@ class AliPan(StorageBase, metaclass=Singleton):
         "copy": "复制"
     }
 
-    # 验证参数
-    _auth_state = {}
-
-    # 上传进度值
-    _last_progress = 0
-
     # 基础url
     base_url = "https://openapi.alipan.com"
 
     def __init__(self):
         super().__init__()
+        self._auth_state = {}
         self.session = requests.Session()
         self._init_session()
 
@@ -244,6 +239,7 @@ class AliPan(StorageBase, metaclass=Singleton):
         conf = self.get_conf()
         conf.update(result)
         self.set_config(conf)
+        return None
 
     def _request_api(self, method: str, endpoint: str,
                      result_key: Optional[str] = None, **kwargs) -> Optional[Union[dict, list]]:
@@ -369,7 +365,7 @@ class AliPan(StorageBase, metaclass=Singleton):
                 break
             next_marker = resp.get("next_marker")
             for item in resp.get("items", []):
-                items.append(self.__get_fileitem(item, parent=fileitem.path))
+                items.append(self.__get_fileitem(item, parent=str(fileitem.path)))
             if len(resp.get("items")) < 100:
                 break
         return items
diff --git a/app/modules/filemanager/storages/alist.py b/app/modules/filemanager/storages/alist.py
index 53972338..37ec9e4d 100644
--- a/app/modules/filemanager/storages/alist.py
+++ b/app/modules/filemanager/storages/alist.py
@@ -12,11 +12,11 @@ from app.log import logger
 from app.modules.filemanager.storages import StorageBase
 from app.schemas.types import StorageSchema
 from app.utils.http import RequestUtils
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.url import UrlUtils
 
 
-class Alist(StorageBase, metaclass=Singleton):
+class Alist(StorageBase, metaclass=WeakSingleton):
     """
     Alist相关操作
     api文档：https://oplist.org/zh/
@@ -38,7 +38,7 @@ class Alist(StorageBase, metaclass=Singleton):
         """
         初始化
         """
-        self.__generate_token.clear_cache()
+        self.__generate_token.clear_cache() # noqa
 
     @property
     def __get_base_url(self) -> str:
diff --git a/app/modules/filemanager/storages/smb.py b/app/modules/filemanager/storages/smb.py
index a5212398..f6e0e955 100644
--- a/app/modules/filemanager/storages/smb.py
+++ b/app/modules/filemanager/storages/smb.py
@@ -12,17 +12,19 @@ from app.core.config import settings
 from app.log import logger
 from app.modules.filemanager import StorageBase
 from app.schemas.types import StorageSchema
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 
 lock = threading.Lock()
 
 
 class SMBConnectionError(Exception):
-    """SMB 连接错误"""
+    """
+    SMB 连接错误
+    """
     pass
 
 
-class SMB(StorageBase, metaclass=Singleton):
+class SMB(StorageBase, metaclass=WeakSingleton):
     """
     SMB网络挂载存储相关操作 - 使用 smbclient 高级接口
     """
diff --git a/app/modules/filemanager/storages/u115.py b/app/modules/filemanager/storages/u115.py
index ced7e8df..81bd3569 100644
--- a/app/modules/filemanager/storages/u115.py
+++ b/app/modules/filemanager/storages/u115.py
@@ -18,7 +18,7 @@ from app.core.config import settings
 from app.log import logger
 from app.modules.filemanager import StorageBase
 from app.schemas.types import StorageSchema
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.utils.string import StringUtils
 
 lock = threading.Lock()
@@ -28,7 +28,7 @@ class NoCheckInException(Exception):
     pass
 
 
-class U115Pan(StorageBase, metaclass=Singleton):
+class U115Pan(StorageBase, metaclass=WeakSingleton):
     """
     115相关操作
     """
@@ -41,18 +41,12 @@ class U115Pan(StorageBase, metaclass=Singleton):
         "move": "移动",
         "copy": "复制"
     }
-
-    # 验证参数
-    _auth_state = {}
-
-    # 上传进度值
-    _last_progress = 0
-
     # 基础url
     base_url = "https://proapi.115.com"
 
     def __init__(self):
         super().__init__()
+        self._auth_state = {}
         self.session = requests.Session()
         self._init_session()
 
@@ -492,7 +486,8 @@ class U115Pan(StorageBase, metaclass=Singleton):
                         type="file" if info_resp["file_category"] == "1" else "dir",
                         name=info_resp["file_name"],
                         basename=Path(info_resp["file_name"]).stem,
-                        extension=Path(info_resp["file_name"]).suffix[1:] if info_resp["file_category"] == "1" else None,
+                        extension=Path(info_resp["file_name"]).suffix[1:] if info_resp[
+                                                                                 "file_category"] == "1" else None,
                         pickcode=info_resp["pick_code"],
                         size=StringUtils.num_filesize(info_resp['size']) if info_resp["file_category"] == "1" else None,
                         modify_time=info_resp["utime"]
diff --git a/app/modules/themoviedb/category.py b/app/modules/themoviedb/category.py
index 56dd844c..a1066e4b 100644
--- a/app/modules/themoviedb/category.py
+++ b/app/modules/themoviedb/category.py
@@ -7,19 +7,19 @@ from ruamel.yaml import CommentedMap
 
 from app.core.config import settings
 from app.log import logger
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 
 
-class CategoryHelper(metaclass=Singleton):
+class CategoryHelper(metaclass=WeakSingleton):
     """
     二级分类
     """
-    _categorys = {}
-    _movie_categorys = {}
-    _tv_categorys = {}
 
     def __init__(self):
         self._category_path: Path = settings.CONFIG_PATH / "category.yaml"
+        self._categorys = {}
+        self._movie_categorys = {}
+        self._tv_categorys = {}
         self.init()
 
     def init(self):
@@ -69,7 +69,7 @@ class CategoryHelper(metaclass=Singleton):
         """
         if not self._movie_categorys:
             return []
-        return self._movie_categorys.keys()
+        return list(self._movie_categorys.keys())
 
     @property
     def tv_categorys(self) -> list:
@@ -78,7 +78,7 @@ class CategoryHelper(metaclass=Singleton):
         """
         if not self._tv_categorys:
             return []
-        return self._tv_categorys.keys()
+        return list(self._tv_categorys.keys())
 
     def get_movie_category(self, tmdb_info) -> str:
         """
@@ -127,7 +127,7 @@ class CategoryHelper(metaclass=Singleton):
                     continue
                 elif attr == "production_countries":
                     # 制片国家
-                    info_values = [str(val.get("iso_3166_1")).upper() for val in info_value]
+                    info_values = [str(val.get("iso_3166_1")).upper() for val in info_value] # type: ignore
                 else:
                     if isinstance(info_value, list):
                         info_values = [str(val).upper() for val in info_value]
diff --git a/app/modules/themoviedb/tmdb_cache.py b/app/modules/themoviedb/tmdb_cache.py
index 52cc2988..61b7c4e4 100644
--- a/app/modules/themoviedb/tmdb_cache.py
+++ b/app/modules/themoviedb/tmdb_cache.py
@@ -9,7 +9,7 @@ from typing import Optional
 from app.core.config import settings
 from app.core.meta import MetaBase
 from app.log import logger
-from app.utils.singleton import Singleton
+from app.utils.singleton import WeakSingleton
 from app.schemas.types import MediaType
 
 lock = RLock()
@@ -18,7 +18,7 @@ CACHE_EXPIRE_TIMESTAMP_STR = "cache_expire_timestamp"
 EXPIRE_TIMESTAMP = settings.CONF.meta
 
 
-class TmdbCache(metaclass=Singleton):
+class TmdbCache(metaclass=WeakSingleton):
     """
     TMDB缓存数据
     {
@@ -28,9 +28,6 @@ class TmdbCache(metaclass=Singleton):
         "type": MediaType
     }
     """
-    _meta_data: dict = {}
-    # 缓存文件路径
-    _meta_path: Path = None
     # TMDB缓存过期
     _tmdb_cache_expire: bool = True
 
@@ -218,3 +215,6 @@ class TmdbCache(metaclass=Singleton):
         if not cache_media_info:
             return
         self._meta_data[key]['title'] = cn_title
+
+    def __del__(self):
+        self.save()
diff --git a/app/utils/singleton.py b/app/utils/singleton.py
index 3cb20076..15503ab3 100644
--- a/app/utils/singleton.py
+++ b/app/utils/singleton.py
@@ -1,4 +1,6 @@
 import abc
+import threading
+import weakref
 
 
 class Singleton(abc.ABCMeta, type):
@@ -40,3 +42,17 @@ class AbstractSingletonClass(abc.ABC, metaclass=SingletonClass):
     抽像类单例模式（按类）
     """
     pass
+
+
+class WeakSingleton(abc.ABCMeta, type):
+    """
+    弱引用单例模式 - 当没有强引用时自动清理
+    """
+    _instances: weakref.WeakKeyDictionary = weakref.WeakKeyDictionary()
+    _lock = threading.RLock()
+
+    def __call__(cls, *args, **kwargs):
+        with cls._lock:
+            if cls not in cls._instances:
+                cls._instances[cls] = super().__call__(*args, **kwargs)
+            return cls._instances[cls]