init commit

shared/cache.py

@@ -0,0 +1,42 @@
+import redis.asyncio as redis
+from shared.config import settings
+
+# Redis connection
+redis_client = redis.from_url(settings.REDIS_URL)
+
+
+class CacheService:
+    @staticmethod
+    async def set(key: str, value: str, expire: int = 3600):
+        """Set cache with expiration"""
+        await redis_client.set(key, value, ex=expire)
+    
+    @staticmethod
+    async def get(key: str) -> str:
+        """Get cache value"""
+        return await redis_client.get(key)
+    
+    @staticmethod
+    async def delete(key: str):
+        """Delete cache key"""
+        await redis_client.delete(key)
+    
+    @staticmethod
+    async def exists(key: str) -> bool:
+        """Check if key exists"""
+        return await redis_client.exists(key)
+    
+    @staticmethod
+    async def set_location(user_id: int, latitude: float, longitude: float, expire: int = 300):
+        """Cache user location with expiration (5 minutes default)"""
+        location_data = f"{latitude},{longitude}"
+        await redis_client.set(f"location:{user_id}", location_data, ex=expire)
+    
+    @staticmethod
+    async def get_location(user_id: int) -> tuple[float, float] | None:
+        """Get cached user location"""
+        location_data = await redis_client.get(f"location:{user_id}")
+        if location_data:
+            lat, lng = location_data.decode().split(',')
+            return float(lat), float(lng)
+        return None