refactor(backend): optimize cache system and model/provider services

src/services/cache/invalidation.py

@@ -3,18 +3,14 @@
 
 统一管理各种缓存的失效逻辑，支持：
 1. GlobalModel 变更时失效相关缓存
-2. ModelMapping 变更时失效别名/降级缓存
-3. Model 变更时失效模型映射缓存
-4. 支持同步和异步缓存后端
+2. Model 变更时失效模型映射缓存
+3. 支持同步和异步缓存后端
 """
 
-import asyncio
 from typing import Optional
 
 from src.core.logger import logger
 
-from src.core.logger import logger
-
 
 class CacheInvalidationService:
     """
@@ -25,14 +21,8 @@ class CacheInvalidationService:
 
     def __init__(self):
         """初始化缓存失效服务"""
-        self._mapping_resolver = None
         self._model_mappers = []  # 可能有多个 ModelMapperMiddleware 实例
 
-    def set_mapping_resolver(self, mapping_resolver):
-        """设置模型映射解析器实例"""
-        self._mapping_resolver = mapping_resolver
-        logger.debug(f"[CacheInvalidation] 模型映射解析器已注册 (实例: {id(mapping_resolver)})")
-
     def register_model_mapper(self, model_mapper):
         """注册 ModelMapper 实例"""
         if model_mapper not in self._model_mappers:
@@ -48,37 +38,12 @@ class CacheInvalidationService:
         """
         logger.info(f"[CacheInvalidation] GlobalModel 变更: {model_name}")
 
-        # 异步失效模型解析器中的缓存
-        if self._mapping_resolver:
-            asyncio.create_task(self._mapping_resolver.invalidate_global_model_cache())
-
         # 失效所有 ModelMapper 中与此模型相关的缓存
         for mapper in self._model_mappers:
             # 清空所有缓存（因为不知道哪些 provider 使用了这个模型）
             mapper.clear_cache()
             logger.debug(f"[CacheInvalidation] 已清空 ModelMapper 缓存")
 
-    def on_model_mapping_changed(self, source_model: str, provider_id: Optional[str] = None):
-        """
-        ModelMapping 变更时的缓存失效
-
-        Args:
-            source_model: 变更的源模型名
-            provider_id: 相关 Provider（None 表示全局）
-        """
-        logger.info(f"[CacheInvalidation] ModelMapping 变更: {source_model} (provider={provider_id})")
-
-        if self._mapping_resolver:
-            asyncio.create_task(
-                self._mapping_resolver.invalidate_mapping_cache(source_model, provider_id)
-            )
-
-        for mapper in self._model_mappers:
-            if provider_id:
-                mapper.refresh_cache(provider_id)
-            else:
-                mapper.clear_cache()
-
     def on_model_changed(self, provider_id: str, global_model_id: str):
         """
         Model 变更时的缓存失效
@@ -98,9 +63,6 @@ class CacheInvalidationService:
         """清空所有缓存"""
         logger.info("[CacheInvalidation] 清空所有缓存")
 
-        if self._mapping_resolver:
-            asyncio.create_task(self._mapping_resolver.clear_cache())
-
         for mapper in self._model_mappers:
             mapper.clear_cache()