diff --git a/blog/middleware.py b/blog/middleware.py
index 9403941..b30d42a 100644
--- a/blog/middleware.py
+++ b/blog/middleware.py
@@ -14,10 +14,13 @@
 """
 import datetime
 import time
+import logging
 from ipware.ip import get_real_ip
 from DjangoBlog.utils import cache
 from blog.documents import ELASTICSEARCH_ENABLED, ElaspedTimeDocumentManager
 
+logger = logging.getLogger(__name__)
+
 
 class OnlineMiddleware(object):
     def __init__(self, get_response=None):
@@ -25,21 +28,22 @@ class OnlineMiddleware(object):
         super().__init__()
 
     def __call__(self, request):
+        ''' page render time '''
         start_time = time.time()
         response = self.get_response(request)
-        http_user_agent = request.META.get('HTTP_USER_AGENT', [])
-        if 'Spider' in http_user_agent or 'spider' in http_user_agent:
-            return response
-        try:
-            cast_time = time.time() - start_time
-            if ELASTICSEARCH_ENABLED:
-                time_taken = round((cast_time) * 1000, 2)
-                url = request.path
-                from django.utils import timezone
-
-                ElaspedTimeDocumentManager.create(url=url, time_taken=time_taken, log_datetime=timezone.now(),
-                                                  type='blog', useragent=http_user_agent)
-            response.content = response.content.replace(b'<!!LOAD_TIMES!!>', str.encode(str(cast_time)[:5]))
-        except:
-            pass
+        http_user_agent = request.META.get('HTTP_USER_AGENT', '')
+
+        if 'spider'.upper() not in http_user_agent.upper():
+            try:
+                cast_time = time.time() - start_time
+                if ELASTICSEARCH_ENABLED:
+                    time_taken = round((cast_time) * 1000, 2)
+                    url = request.path
+                    from django.utils import timezone
+
+                    ElaspedTimeDocumentManager.create(url=url, time_taken=time_taken, log_datetime=timezone.now(),
+                                                      type='blog', useragent=http_user_agent)
+                response.content = response.content.replace(b'<!!LOAD_TIMES!!>', str.encode(str(cast_time)[:5]))
+            except Exception as e:
+                logger.error("Error OnlineMiddleware: %s" % e)
         return response