diff --git a/DjangoBlog/settings.py b/DjangoBlog/settings.py
index f17dd33..ed94f02 100644
--- a/DjangoBlog/settings.py
+++ b/DjangoBlog/settings.py
@@ -23,7 +23,7 @@ SECRET_KEY = '&3g0bdza#c%dm1lf%5gi&0-*53p3t0m*hmcvo29cn^$ji7je(c'
 
 # SECURITY WARNING: don't run with debug turned on in production!
 # DEBUG = True
-DEBUG = True
+DEBUG = False
 
 # ALLOWED_HOSTS = []
 ALLOWED_HOSTS = ['www.lylinux.net', '127.0.0.1']
@@ -179,11 +179,11 @@ CACHE_CONTROL_MAX_AGE = 2592000
 # cache setting
 
 CACHES = {
-    'default': {
+    'default1': {
         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
         'LOCATION': '127.0.0.1:11211',
     },
-    'localmem': {
+    'default': {
         'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
         'LOCATION': 'unique-snowflake',
     }
diff --git a/blog/middleware.py b/blog/middleware.py
index dccc53d..b79d432 100644
--- a/blog/middleware.py
+++ b/blog/middleware.py
@@ -31,18 +31,17 @@ class OnlineMiddleware(object):
             return
 
         online_ips = cache.get("online_ips", [])
-
         if online_ips:
             online_ips = cache.get_many(online_ips).keys()
-
+            online_ips = list(online_ips)
         ip = get_real_ip(request)
 
         cache.set(ip, 0, 5 * 60)
 
         if ip not in online_ips:
             online_ips.append(ip)
-
-        cache.set("online_ips", online_ips)
+            s = type(online_ips)
+            cache.set("online_ips", online_ips)
 
     def process_response(self, request, response):
         cast_time = time.time() - self.start_time
diff --git a/templates/share_layout/base.html b/templates/share_layout/base.html
index 354d1f9..7db1549 100644
--- a/templates/share_layout/base.html
+++ b/templates/share_layout/base.html
@@ -54,7 +54,7 @@
             <h2 class="site-description">{{ SITE_DESCRIPTION }}</h2>
         </hgroup>
 
-        {% cache 36000 sidebar %}
+        {% cache 36000 nav %}
             {% include 'share_layout/nav.html' %}
         {% endcache %}
 
@@ -63,7 +63,7 @@
         {% block content %}
         {% endblock %}
 
-        {% cache 36000 nav %}
+        {% cache 36000 sidebar %}
             {% block sidebar %}
 
             {% endblock %}