diff --git a/DjangoBlog/settings.py b/DjangoBlog/settings.py
index ee65c96..5222bc7 100644
--- a/DjangoBlog/settings.py
+++ b/DjangoBlog/settings.py
@@ -51,9 +51,9 @@ MIDDLEWARE_CLASSES = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.gzip.GZipMiddleware',
-    'django.middleware.cache.UpdateCacheMiddleware',
+    # 'django.middleware.cache.UpdateCacheMiddleware',
     'django.middleware.common.CommonMiddleware',
-    'django.middleware.cache.FetchFromCacheMiddleware',
+    # 'django.middleware.cache.FetchFromCacheMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
@@ -144,6 +144,8 @@ HAYSTACK_CONNECTIONS = {
 }
 # 自动更新搜索索引
 HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor'
+#允许使用用户名或密码登录
+AUTHENTICATION_BACKENDS = ['accounts.user_login_backend.EmailOrUsernameModelBackend']
 
 STATIC_ROOT = os.path.join(SITE_ROOT, 'collectedstatic')
 
@@ -157,7 +159,7 @@ TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
 DATE_TIME_FORMAT = '%Y-%m-%d'
 
 SITE_NAME = '且听风吟'
-SITE_URL = 'http://blog.lylinux.org'
+SITE_URL = 'http://www.lylinux.net'
 SITE_DESCRIPTION = '大巧无工,重剑无锋.'
 SITE_SEO_DESCRIPTION = '小站主要用来分享和记录学习经验,教程,记录个人生活的点滴以及一些随笔.欢迎大家访问小站'
 SITE_SEO_KEYWORDS = 'linux,apache,mysql,服务器,ubuntu,shell,web,csharp,.net,asp,mac,swift'
@@ -196,7 +198,7 @@ OAHUTH = {
     'sina': {
         'appkey': '3161614143',
         'appsecret': 'ee17c099317f872eeddb25204ea46721',
-        'callbackurl': 'http://blog.lylinux.org/oauth/weibo'
+        'callbackurl': 'http://www.lylinux.net/oauth/weibo'
     },
     'google': {
         'appkey': os.environ.get('GOOGLE_APP_KEY'),
diff --git a/DjangoBlog/utils.py b/DjangoBlog/utils.py
index cdaf945..35f6e35 100644
--- a/DjangoBlog/utils.py
+++ b/DjangoBlog/utils.py
@@ -23,12 +23,14 @@ import logging
 logger = logging.getLogger('djangoblog')
 
 
-def cache_decorator(expiration=3 * 60):
+def cache_decorator(expiration=3 * 60, cache_key=None):
     def wrapper(func):
         def news(*args, **kwargs):
-            unique_str = repr((func, args, kwargs))
-            m = md5(unique_str.encode('utf-8'))
-            key = m.hexdigest()
+            key = cache_key
+            if not key:
+                unique_str = repr((func, args, kwargs))
+                m = md5(unique_str.encode('utf-8'))
+                key = m.hexdigest()
             value = cache.get(key)
             if value:
                 logger.info('cache_decorator get cache %s' % func.__name__)
diff --git a/accounts/forms.py b/accounts/forms.py
index 593c8b3..ea25357 100644
--- a/accounts/forms.py
+++ b/accounts/forms.py
@@ -21,18 +21,18 @@ from django.contrib.auth import get_user_model
 class LoginForm(AuthenticationForm):
     def __init__(self, *args, **kwargs):
         super(LoginForm, self).__init__(*args, **kwargs)
-        self.fields['username'].widget = widgets.TextInput(attrs={'placeholder': "用户名", "class": "form-control"})
-        self.fields['password'].widget = widgets.PasswordInput(attrs={'placeholder': "密码", "class": "form-control"})
+        self.fields['username'].widget = widgets.TextInput(attrs={'placeholder': "username", "class": "form-control"})
+        self.fields['password'].widget = widgets.PasswordInput(attrs={'placeholder': "password", "class": "form-control"})
 
 
 class RegisterForm(UserCreationForm):
     def __init__(self, *args, **kwargs):
         super(RegisterForm, self).__init__(*args, **kwargs)
 
-        self.fields['username'].widget = widgets.TextInput(attrs={'placeholder': "用户名", "class": "form-control"})
-        self.fields['email'].widget = widgets.EmailInput(attrs={'placeholder': "邮箱", "class": "form-control"})
-        self.fields['password1'].widget = widgets.PasswordInput(attrs={'placeholder': "密码", "class": "form-control"})
-        self.fields['password2'].widget = widgets.PasswordInput(attrs={'placeholder': "确认密码", "class": "form-control"})
+        self.fields['username'].widget = widgets.TextInput(attrs={'placeholder': "username", "class": "form-control"})
+        self.fields['email'].widget = widgets.EmailInput(attrs={'placeholder': "email", "class": "form-control"})
+        self.fields['password1'].widget = widgets.PasswordInput(attrs={'placeholder': "password", "class": "form-control"})
+        self.fields['password2'].widget = widgets.PasswordInput(attrs={'placeholder': "repeat password", "class": "form-control"})
 
     class Meta:
         model = get_user_model()
diff --git a/accounts/user_login_backend.py b/accounts/user_login_backend.py
new file mode 100644
index 0000000..aee3803
--- /dev/null
+++ b/accounts/user_login_backend.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+
+"""
+@version: ??
+@author: liangliangyy
+@license: MIT Licence 
+@contact: liangliangyy@gmail.com
+@site: https://www.lylinux.org/
+@software: PyCharm
+@file: user_login_backend.py
+@time: 2017/2/17 下午8:45
+"""
+from django.conf import settings
+from django.contrib.auth import get_user_model
+
+
+class EmailOrUsernameModelBackend(object):
+    """
+    允许使用用户名或邮箱登录
+    """
+    def authenticate(self, username=None, password=None):
+        if '@' in username:
+            kwargs = {'email': username}
+        else:
+            kwargs = {'username': username}
+        try:
+            user = get_user_model().objects.get(**kwargs)
+            if user.check_password(password):
+                return user
+        except get_user_model().DoesNotExist:
+            return None
+
+    def get_user(self, username):
+        try:
+            return get_user_model().objects.get(pk=username)
+        except get_user_model().DoesNotExist:
+            return None
diff --git a/accounts/views.py b/accounts/views.py
index 332476d..55ad8e8 100644
--- a/accounts/views.py
+++ b/accounts/views.py
@@ -12,6 +12,7 @@ from django.contrib import auth
 from django.views.decorators.cache import never_cache
 from django.shortcuts import redirect
 
+
 # Create your views here.
 
 class RegisterView(FormView):
@@ -20,9 +21,10 @@ class RegisterView(FormView):
 
     def form_valid(self, form):
         user = form.save(False)
-
         user.save(True)
-        return HttpResponseRedirect('/')
+        url = reverse('accounts:login')
+        return HttpResponseRedirect(url)
+
 
 @never_cache
 def LogOut(requests):
diff --git a/blog/management/commands/clear_cache.py b/blog/management/commands/clear_cache.py
new file mode 100644
index 0000000..db0dad2
--- /dev/null
+++ b/blog/management/commands/clear_cache.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# encoding: utf-8
+
+
+"""
+@version: ??
+@author: liangliangyy
+@license: MIT Licence 
+@contact: liangliangyy@gmail.com
+@site: https://www.lylinux.org/
+@software: PyCharm
+@file: clear_cache.py
+@time: 2017/2/17 下午10:30
+"""
+from DjangoBlog.utils import cache
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    help = 'clear the whole cache'
+
+    def handle(self, *args, **options):
+        cache.clear()
+        self.stdout.write(self.style.SUCCESS('Cleared cache\n'))
diff --git a/blog/urls.py b/blog/urls.py
index 0df4561..5588df9 100644
--- a/blog/urls.py
+++ b/blog/urls.py
@@ -24,7 +24,7 @@ urlpatterns = [
     url(r'^$', views.IndexView.as_view(), name='index'),
     url(r'^page/(?P<page>\d+)$', views.IndexView.as_view(), name='index_page'),
     url(r'^article/(?P<year>\d+)/(?P<month>\d+)/(?P<day>\d+)/(?P<article_id>\d+)-(?P<slug>\S+).html$',
-        views.ArticleDetailView.as_view(),
+        cache_page(60 * 60 * 10)(views.ArticleDetailView.as_view()),
         name='detail'),
     url(r'^blogpage/(?P<year>\d+)/(?P<month>\d+)/(?P<day>\d+)/(?P<page_id>\d+)-(?P<slug>\S+).html$',
         views.ArticleDetailView.as_view(),
diff --git a/blog/views.py b/blog/views.py
index 650de52..5df1f8f 100644
--- a/blog/views.py
+++ b/blog/views.py
@@ -21,6 +21,7 @@ import datetime
 from django.views.decorators.csrf import csrf_exempt
 import os
 from django.contrib.auth.decorators import login_required
+from DjangoBlog.utils import cache, cache_decorator
 
 """
 class SeoProcessor():
@@ -79,7 +80,7 @@ class ArticleDetailView(DetailView):
 
     def get_context_data(self, **kwargs):
         articleid = int(self.kwargs[self.pk_url_kwarg])
-
+        print(str(articleid) + "get_context_data")
         comment_form = CommentForm()
         u = self.request.user
 
@@ -91,6 +92,7 @@ class ArticleDetailView(DetailView):
             user = self.request.user
             comment_form.fields["email"].initial = user.email
             comment_form.fields["name"].initial = user.username
+        key = "article_comment_{}".format(articleid)
 
         article_comments = self.object.comment_set.all()
 
@@ -222,9 +224,11 @@ def fileupload(request):
 @login_required
 def refresh_memcache(request):
     try:
+
         if request.user.is_superuser:
-            result = os.popen(' service memcached restart ').readline()
-            return HttpResponse(result)
+            from DjangoBlog.utils import cache
+            cache.clear()
+            return HttpResponse("ok")
         else:
             from django.http import HttpResponseForbidden
             return HttpResponseForbidden()
diff --git a/comments/models.py b/comments/models.py
index d168ca3..c1a9c9d 100644
--- a/comments/models.py
+++ b/comments/models.py
@@ -5,6 +5,7 @@ from  blog.models import Article
 from django.core.mail import EmailMultiAlternatives
 from django.contrib.sites.models import Site
 import _thread
+from DjangoBlog.utils import cache
 
 
 # Create your models here.
@@ -26,7 +27,10 @@ class Comment(models.Model):
         verbose_name_plural = verbose_name
 
     def send_comment_email(self, msg):
-        msg.send()
+        try:
+            msg.send()
+        except:
+            pass
 
     def save(self, *args, **kwargs):
         super().save(*args, **kwargs)
@@ -47,6 +51,7 @@ class Comment(models.Model):
         msg = EmailMultiAlternatives(subject, html_content, from_email='no-reply@lylinux.net', to=[tomail])
 
         msg.content_subtype = "html"
+
         _thread.start_new_thread(self.send_comment_email, (msg,))
 
         if self.parent_comment:
@@ -59,7 +64,8 @@ class Comment(models.Model):
             tomail = self.parent_comment.author.email
             msg = EmailMultiAlternatives(subject, html_content, from_email='no-reply@lylinux.net', to=[tomail])
             msg.content_subtype = "html"
+
             _thread.start_new_thread(self.send_comment_email, (msg,))
 
-    def __str__(self):
-        return self.body
+        def __str__(self):
+            return self.body
diff --git a/comments/views.py b/comments/views.py
index 5751e19..c474d91 100644
--- a/comments/views.py
+++ b/comments/views.py
@@ -9,6 +9,7 @@ from django.http import HttpResponseRedirect
 from django.core.urlresolvers import reverse
 from django.contrib.auth import get_user_model
 from django import forms
+from django.contrib import auth
 
 
 class CommentPostView(FormView):
@@ -17,7 +18,9 @@ class CommentPostView(FormView):
 
     def get(self, request, *args, **kwargs):
         article_id = self.kwargs['article_id']
-        url = reverse('blog:detail', kwargs={'article_id': article_id})
+
+        article = Article.objects.get(pk=article_id)
+        url = article.get_absolute_url()
         return HttpResponseRedirect(url + "#comments")
 
     def form_invalid(self, form):
@@ -49,20 +52,17 @@ class CommentPostView(FormView):
             email = form.cleaned_data['email']
             username = form.cleaned_data['name']
 
-            user = get_user_model().objects.create_user(username=username, email=email, password=None,
-                                                        nikename=username)
-        author_id = user.pk
-
+            user = get_user_model().objects.get_or_create(username=username, email=email)[0]
+            # auth.login(self.request, user)
         comment = form.save(False)
         comment.article = article
 
-        comment.author = get_user_model().objects.get(pk=author_id)
+        comment.author = user
 
         if form.cleaned_data['parent_comment_id']:
             parent_comment = Comment.objects.get(pk=form.cleaned_data['parent_comment_id'])
             comment.parent_comment = parent_comment
 
         comment.save(True)
-
         # return HttpResponseRedirect(article.get_absolute_url() + "#div-comment-" + comment.pk)
         return HttpResponseRedirect("%s#div-comment-%d" % (article.get_absolute_url(), comment.pk))
diff --git a/templates/account/login.html b/templates/account/login.html
index a8c2d68..10800ba 100644
--- a/templates/account/login.html
+++ b/templates/account/login.html
@@ -23,7 +23,7 @@
                 <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
 
                 <div class="checkbox">
-                    <a class="pull-right">Need help?</a>
+                    {% comment %}<a class="pull-right">Need help?</a>{% endcomment %}
                     <label>
                         <input type="checkbox" value="remember-me"> Stay signed in
                     </label>
@@ -33,7 +33,8 @@
         </div>
 
         <p class="text-center">
-            <a href="{% url "account:register" %}">Create an account</a>
+            <a href="{% url "account:register" %}">Create Account</a>
+            |
             <a href="/">Home Page</a>
         </p>
 
diff --git a/templates/account/registration_form.html b/templates/account/registration_form.html
index ab551ed..776442d 100644
--- a/templates/account/registration_form.html
+++ b/templates/account/registration_form.html
@@ -3,7 +3,7 @@
 {% block content %}
     <div class="container">
 
-        <h2 class="form-signin-heading text-center">Sign in with your Account</h2>
+        <h2 class="form-signin-heading text-center">Create Your Account</h2>
 
         <div class="card card-signin">
             <img class="img-circle profile-img" src="{% static 'blog/img/avatar.png' %}" alt="">
@@ -20,7 +20,7 @@
                 {% endfor %}
 
 
-                <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
+                <button class="btn btn-lg btn-primary btn-block" type="submit">Create Your Account</button>
 
                 {% comment %}
                  <div class="checkbox">
@@ -34,7 +34,7 @@
         </div>
 
         <p class="text-center">
-            <a href="{% url "account:login" %}">LogIn</a>
+            <a href="{% url "account:login" %}">Sign In</a>
         </p>
 
     </div> <!-- /container -->
diff --git a/templates/blog/tags/sidebar.html b/templates/blog/tags/sidebar.html
index ab7e155..90d20d2 100755
--- a/templates/blog/tags/sidebar.html
+++ b/templates/blog/tags/sidebar.html
@@ -85,7 +85,7 @@
                 </li>
 
             {% else %}
-                <li><a href="{% url "account:login" %}">登陆</a>
+                <li><a href="{% url "account:login" %}">登录</a>
             {% endif %}
 
         </ul>
diff --git a/templates/share_layout/base.html b/templates/share_layout/base.html
index 8cc2fd8..87f4a2c 100644
--- a/templates/share_layout/base.html
+++ b/templates/share_layout/base.html
@@ -65,9 +65,8 @@
         {% block content %}
         {% endblock %}
 
-        {% cache 36000 sidebar %}
+        {% cache 36000 sidebar request.user.username %}
             {% block sidebar %}
-
             {% endblock %}
         {% endcache %}
     </div><!-- #main .wrapper -->