first code

services/base_service.py

@@ -0,0 +1,38 @@
+from abc import ABC, abstractmethod
+from typing import Dict, Any, Optional
+from datetime import datetime, timedelta
+
+class BaseService(ABC):
+    """基础服务类，为扩展提供统一接口"""
+    
+    def __init__(self):
+        self.cache = {}
+        self.cache_timeout = timedelta(seconds=30)
+    
+    @abstractmethod
+    def get_data(self, **kwargs) -> Optional[Dict[str, Any]]:
+        """获取数据的抽象方法"""
+        pass
+    
+    def get_cached_data(self, cache_key: str, **kwargs) -> Optional[Dict[str, Any]]:
+        """带缓存的数据获取"""
+        # 检查缓存
+        if cache_key in self.cache:
+            cached_item = self.cache[cache_key]
+            if datetime.now() - cached_item['timestamp'] < self.cache_timeout:
+                return cached_item['data']
+        
+        # 获取新数据
+        data = self.get_data(**kwargs)
+        if data:
+            # 更新缓存
+            self.cache[cache_key] = {
+                'data': data,
+                'timestamp': datetime.now()
+            }
+        
+        return data
+    
+    def clear_cache(self):
+        """清理缓存"""
+        self.cache.clear()