diff --git a/cache/redis_cache.py b/cache/redis_cache.py
index 1ea4c0b..091c57d 100644
--- a/cache/redis_cache.py
+++ b/cache/redis_cache.py
@@ -28,6 +28,7 @@ import time
 from typing import Any, List
 
 from redis import Redis
+from redis.exceptions import ResponseError
 
 from cache.abs_cache import AbstractCache
 from config import db_config
@@ -76,8 +77,25 @@ class RedisCache(AbstractCache):
     def keys(self, pattern: str) -> List[str]:
         """
         Get all keys matching the pattern
+        First try KEYS command, if not supported fallback to SCAN
         """
-        return [key.decode() for key in self._redis_client.keys(pattern)]
+        try:
+            # Try KEYS command first (faster for standard Redis)
+            return [key.decode() if isinstance(key, bytes) else key for key in self._redis_client.keys(pattern)]
+        except ResponseError as e:
+            # If KEYS is not supported (e.g., Redis Cluster or cloud Redis), use SCAN
+            if "unknown command" in str(e).lower() or "keys" in str(e).lower():
+                keys_list: List[str] = []
+                cursor = 0
+                while True:
+                    cursor, keys = self._redis_client.scan(cursor=cursor, match=pattern, count=100)
+                    keys_list.extend([key.decode() if isinstance(key, bytes) else key for key in keys])
+                    if cursor == 0:
+                        break
+                return keys_list
+            else:
+                # Re-raise if it's a different error
+                raise
 
 
 if __name__ == '__main__':
diff --git a/tools/crawler_util.py b/tools/crawler_util.py
index b010993..7cab0e0 100644
--- a/tools/crawler_util.py
+++ b/tools/crawler_util.py
@@ -180,11 +180,19 @@ def format_proxy_info(ip_proxy_info) -> Tuple[Optional[Dict], Optional[str]]:
     from proxy.proxy_ip_pool import IpInfoModel
     ip_proxy_info = cast(IpInfoModel, ip_proxy_info)
 
+    # Playwright proxy server should be in format "host:port" without protocol prefix
+    # Remove protocol prefix if present (http:// or https://)
+    server = f"{ip_proxy_info.ip}:{ip_proxy_info.port}"
+    
     playwright_proxy = {
-        "server": f"{ip_proxy_info.protocol}{ip_proxy_info.ip}:{ip_proxy_info.port}",
-        "username": ip_proxy_info.user,
-        "password": ip_proxy_info.password,
+        "server": server,
     }
+    
+    # Only add username and password if they are not empty
+    if ip_proxy_info.user and ip_proxy_info.password:
+        playwright_proxy["username"] = ip_proxy_info.user
+        playwright_proxy["password"] = ip_proxy_info.password
+    
     # httpx 0.28.1 requires passing proxy URL string directly, not a dictionary
     if ip_proxy_info.user and ip_proxy_info.password:
         httpx_proxy = f"http://{ip_proxy_info.user}:{ip_proxy_info.password}@{ip_proxy_info.ip}:{ip_proxy_info.port}"