统一使用 app.core.cache 中的 TTLCache

app/helper/message.py

@@ -10,7 +10,7 @@ from datetime import datetime
 from typing import Any, Literal, Optional, List, Dict, Union
 from typing import Callable
 
-from cachetools import TTLCache
+from app.core.cache import TTLCache
 from jinja2 import Template
 
 from app.core.config import global_vars

app/helper/redis.py

@@ -10,10 +10,10 @@ from app.core.event import eventmanager, Event
 from app.log import logger
 from app.schemas import ConfigChangeEventData
 from app.schemas.types import EventType
-from app.utils.singleton import SingletonClass
+from app.utils.singleton import Singleton
 
 
-class RedisHelper(metaclass=SingletonClass):
+class RedisHelper(metaclass=Singleton):
     """
     Redis连接和操作助手类