Add POI feature and imporve the overall backend implementation

services/external/app/core/redis_client.py

@@ -0,0 +1,16 @@
+"""
+Redis Client for POI Service
+
+Provides access to shared Redis client for POI caching.
+"""
+
+from shared.redis_utils import get_redis_client as get_shared_redis_client
+
+
+async def get_redis_client():
+    """
+    Get Redis client for POI service.
+
+    Uses shared Redis infrastructure from shared utilities.
+    """
+    return await get_shared_redis_client()