diff --git a/com/templates/com/news_list.jinja b/com/templates/com/news_list.jinja
index d3e3016b..7c2ec629 100644
--- a/com/templates/com/news_list.jinja
+++ b/com/templates/com/news_list.jinja
@@ -42,6 +42,8 @@
         <div id="birthdays_title">{% trans %}Birthdays{% endtrans %}</div>
           <div id="birthdays_content">
             {% if user.is_subscribed %}
+              {# Cache request for 1 hour #}
+              {% cache 3600 birthdays %}
               <ul class="birthdays_year">
                 {% for d in birthdays.dates('date_of_birth', 'year', 'DESC') %}
                   <li>
@@ -54,6 +56,7 @@
                   </li>
                 {% endfor %}
               </ul>
+              {% endcache %}
             {% else %}
               <p>{% trans %}You need an up to date subscription to access this content{% endtrans %}</p>
             {% endif %}
diff --git a/core/migrations/0032_auto_20190909_0043.py b/core/migrations/0032_auto_20190909_0043.py
new file mode 100644
index 00000000..35671cc0
--- /dev/null
+++ b/core/migrations/0032_auto_20190909_0043.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.24 on 2019-09-08 22:43
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("core", "0031_auto_20190906_1615")]
+
+    operations = [
+        migrations.AlterField(
+            model_name="notification",
+            name="viewed",
+            field=models.BooleanField(
+                db_index=True, default=False, verbose_name="viewed"
+            ),
+        )
+    ]
diff --git a/core/models.py b/core/models.py
index f873e785..d27a2f79 100644
--- a/core/models.py
+++ b/core/models.py
@@ -1393,7 +1393,7 @@ class Notification(models.Model):
         _("type"), max_length=32, choices=settings.SITH_NOTIFICATIONS, default="GENERIC"
     )
     date = models.DateTimeField(_("date"), default=timezone.now)
-    viewed = models.BooleanField(_("viewed"), default=False)
+    viewed = models.BooleanField(_("viewed"), default=False, db_index=True)
 
     def __str__(self):
         if self.param:
diff --git a/core/templates/core/base.jinja b/core/templates/core/base.jinja
index 9d0e53cc..43d2a058 100644
--- a/core/templates/core/base.jinja
+++ b/core/templates/core/base.jinja
@@ -60,21 +60,23 @@
             </div>
             <div id="header_bar">
                 <ul id="header_bars_infos">
-                {% for bar in Counter.objects.filter(type="BAR").all() %}
-                    <li>
-                    <a href="{{ url('counter:activity', counter_id=bar.id) }}" style="padding: 0px">
-                    {% if bar.is_inactive(): %}
-                        <i class="fa fa-question" style="color: #f39c12"></i>
-                    {% elif bar.is_open(): %}
-                        <i class="fa fa-check" style="color: #2ecc71"></i>
-                    {% else %}
-                        <i class="fa fa-times" style="color: #eb2f06"></i>
-                    {% endif %}
-                        {{ bar }}
-                    </a>
-                    </li>
-                {% endfor %}
-                </ul>
+                {% cache 100 counters_activity %}
+                  {% for bar in Counter.objects.filter(type="BAR").all() %}
+                      <li>
+                      <a href="{{ url('counter:activity', counter_id=bar.id) }}" style="padding: 0px">
+                      {% if bar.is_inactive(): %}
+                          <i class="fa fa-question" style="color: #f39c12"></i>
+                      {% elif bar.is_open(): %}
+                          <i class="fa fa-check" style="color: #2ecc71"></i>
+                      {% else %}
+                          <i class="fa fa-times" style="color: #eb2f06"></i>
+                      {% endif %}
+                          {{ bar }}
+                      </a>
+                      </li>
+                  {% endfor %}
+                  </ul>
+                {% endcache %}
                 <form action="{{ url('core:search') }}" method="GET" id="header_search">
                     <input type="text" placeholder="{% trans %}Search{% endtrans %}" name="query" id="search" />
                     <input type="submit" value="{% trans %}Search{% endtrans %}" style="display: none;" />
diff --git a/core/views/site.py b/core/views/site.py
index 8a0f2261..468d3f32 100644
--- a/core/views/site.py
+++ b/core/views/site.py
@@ -2,6 +2,7 @@
 #
 # Copyright 2016,2017
 # - Skia <skia@libskia.so>
+# - Sli <antoine@bartuccio.fr>
 #
 # Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
 # http://ae.utbm.fr.
@@ -50,8 +51,9 @@ class NotificationList(ListView):
     template_name = "core/notification_list.jinja"
 
     def get_queryset(self):
+        # TODO: Bulk update in django 2.2
         if "see_all" in self.request.GET.keys():
-            for n in self.request.user.notifications.all():
+            for n in self.request.user.notifications.filter(viewed=False):
                 n.viewed = True
                 n.save()
         return self.request.user.notifications.order_by("-date")[:20]