diff --git a/Gemfile b/Gemfile
index 21929a806..ce51295bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -41,6 +41,7 @@ gem 'initialjs-rails', '0.2.0'
 gem 'unicorn'
 gem 'paranoia'
 gem 'savon'
+gem 'dalli'
 
 gem 'ahoy_matey', '~> 1.2.1'
 gem 'groupdate'   # group temporary data
diff --git a/Gemfile.lock b/Gemfile.lock
index 60af34f06..922a30d37 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,6 +111,7 @@ GEM
       simplecov (~> 0.10.0)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.1)
+    dalli (2.7.4)
     database_cleaner (1.4.1)
     debug_inspector (0.0.2)
     devise (3.5.2)
@@ -402,6 +403,7 @@ DEPENDENCIES
   ckeditor
   coffee-rails (~> 4.1.0)
   coveralls
+  dalli
   database_cleaner
   devise
   email_spec
diff --git a/app/helpers/cache_keys_helper.rb b/app/helpers/cache_keys_helper.rb
new file mode 100644
index 000000000..088b45632
--- /dev/null
+++ b/app/helpers/cache_keys_helper.rb
@@ -0,0 +1,16 @@
+module CacheKeysHelper
+  def locale_and_user_status
+    @cache_key_user ||= calculate_user_status
+    "#{I18n.locale}/user:#{@cache_key_user}"
+  end
+
+  def calculate_user_status
+    user_status = if user_signed_in? && current_user.verified_at.present?
+      "verified"
+    elsif user_signed_in?
+      "signed"
+    else
+      "visitor"
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/views/debates/_debate.html.erb b/app/views/debates/_debate.html.erb
index 2d1e2deb4..2d8ad2900 100644
--- a/app/views/debates/_debate.html.erb
+++ b/app/views/debates/_debate.html.erb
@@ -1,28 +1,30 @@
-<div id="<%= dom_id(debate) %>" class="debate">
-  <div class="panel">
-    <div class="row">
+<% cache [locale_and_user_status, debate] do %>
+  <div id="<%= dom_id(debate) %>" class="debate">
+    <div class="panel">
+      <div class="row">
 
-      <div class="small-12 medium-9 column">
-        <div class="debate-content">
-          <span class="label left"><%= t("debates.debate.debate") %></span>
-          <i class="icon-debates"></i>
-          <h3><%= link_to debate.title, debate %></h3>
-          <p class="debate-info">
-            <i class="icon-comments"></i>&nbsp;
-            <%= link_to t("debates.debate.comments", count: debate.comments_count), debate_path(debate, anchor: "comments") %>
-          </p>
-          <div class="debate-description">
-            <%= link_to debate.description, debate %>
-            <div class="truncate"></div>
+        <div class="small-12 medium-9 column">
+          <div class="debate-content">
+            <span class="label left"><%= t("debates.debate.debate") %></span>
+            <i class="icon-debates"></i>
+            <h3><%= link_to debate.title, debate %></h3>
+            <p class="debate-info">
+              <i class="icon-comments"></i>&nbsp;
+              <%= link_to t("debates.debate.comments", count: debate.comments_count), debate_path(debate, anchor: "comments") %>
+            </p>
+            <div class="debate-description">
+              <%= link_to debate.description, debate %>
+              <div class="truncate"></div>
+            </div>
+            <%= render "shared/tags", debate: debate, limit: 5 %>
           </div>
-          <%= render "shared/tags", debate: debate, limit: 5 %>
         </div>
-      </div>
 
-      <div id="<%= dom_id(debate) %>_votes" class="small-12 medium-3 column text-center">
-          <%= render 'debates/votes', debate: debate %>
-      </div>
+        <div id="<%= dom_id(debate) %>_votes" class="small-12 medium-3 column text-center">
+            <%= render 'debates/votes', debate: debate %>
+        </div>
 
+      </div>
     </div>
   </div>
-</div>
+<% end %>
diff --git a/app/views/welcome/_featured_debate.html.erb b/app/views/welcome/_featured_debate.html.erb
index 7ad53608b..00fe7ce73 100644
--- a/app/views/welcome/_featured_debate.html.erb
+++ b/app/views/welcome/_featured_debate.html.erb
@@ -1,28 +1,30 @@
-<div class="small-12 medium-4 column">
-  <div id="<%= dom_id featured_debate %>" class="debate-featured">
-    <div class="panel">
+<% cache [locale_and_user_status, featured_debate, 'featured'] do %>
+  <div class="small-12 medium-4 column">
+    <div id="<%= dom_id featured_debate %>" class="debate-featured">
+      <div class="panel">
 
-      <div class="debate-content">
-        <span class="label left"><%= t("debates.debate.debate") %></span>
-        <i class="icon-debates right"></i>
-        <h3><%= link_to featured_debate.title, featured_debate %></h3>
-        <p class="debate-info">
-          <i class="icon-comments"></i>&nbsp;
-          <%= link_to t("debates.show.comments", count: featured_debate.comments_count), debate_path(featured_debate, anchor: "comments") %>
-        </p>
-        <div class="debate-description">
-          <%= link_to featured_debate.description, featured_debate %>
-          <div class="truncate"></div>
+        <div class="debate-content">
+          <span class="label left"><%= t("debates.debate.debate") %></span>
+          <i class="icon-debates right"></i>
+          <h3><%= link_to featured_debate.title, featured_debate %></h3>
+          <p class="debate-info">
+            <i class="icon-comments"></i>&nbsp;
+            <%= link_to t("debates.show.comments", count: featured_debate.comments_count), debate_path(featured_debate, anchor: "comments") %>
+          </p>
+          <div class="debate-description">
+            <%= link_to featured_debate.description, featured_debate %>
+            <div class="truncate"></div>
+          </div>
+          <%= render "shared/tags", debate: featured_debate, limit: 5 %>
         </div>
-        <%= render "shared/tags", debate: featured_debate, limit: 5 %>
-      </div>
 
-      <div class="row">
-        <div id="<%= dom_id(featured_debate) %>_votes" class="small-12 column">
-          <%= render 'debates/votes', debate: featured_debate %>
+        <div class="row">
+          <div id="<%= dom_id(featured_debate) %>_votes" class="small-12 column">
+            <%= render 'debates/votes', debate: featured_debate %>
+          </div>
         </div>
-      </div>
 
+      </div>
     </div>
-  </div>
 </div>
+<% end %>
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index 15dceb233..fbd2881f3 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -1,10 +1,12 @@
-<section role="main">
-  <div class="filters row">
-    <div class="small-12 column">
-      <h2><%= t("welcome.last_debates") %></h2>
+<% cache [locale_and_user_status, @featured_debates, 'featured'] do %>
+  <section role="main">
+    <div class="filters row">
+      <div class="small-12 column">
+        <h2><%= t("welcome.last_debates") %></h2>
+      </div>
     </div>
-  </div>
-  <div id="featured-debates" class="row">
-    <%= render partial: "featured_debate", collection: @featured_debates %>
-  </div>
-</section>
+    <div id="featured-debates" class="row">
+      <%= render partial: "featured_debate", collection: @featured_debates %>
+    </div>
+  </section>
+<% end %>
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 566d4ebc5..1b401544a 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -44,7 +44,7 @@ Rails.application.configure do
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
 
-  config.cache_store = :null_store
+  config.cache_store = :dalli_store
 
   config.after_initialize do
     Bullet.enable = true
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 7a21a1df4..e24d08985 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -55,7 +55,7 @@ Rails.application.configure do
   # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
 
   # Use a different cache store in production.
-  config.cache_store = :null_store
+  config.cache_store = :dalli_store
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.action_controller.asset_host = 'http://assets.example.com'
diff --git a/config/environments/staging.rb b/config/environments/staging.rb
index 7a21a1df4..e24d08985 100644
--- a/config/environments/staging.rb
+++ b/config/environments/staging.rb
@@ -55,7 +55,7 @@ Rails.application.configure do
   # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
 
   # Use a different cache store in production.
-  config.cache_store = :null_store
+  config.cache_store = :dalli_store
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.action_controller.asset_host = 'http://assets.example.com'
diff --git a/config/initializers/acts_as_taggable_on.rb b/config/initializers/acts_as_taggable_on.rb
index 8b1378917..dcccf9429 100644
--- a/config/initializers/acts_as_taggable_on.rb
+++ b/config/initializers/acts_as_taggable_on.rb
@@ -1 +1,8 @@
+ActsAsTaggableOn::Tagging.class_eval do
+  after_destroy :touch_taggable
 
+  def touch_taggable
+    taggable.touch
+  end
+
+end
\ No newline at end of file
diff --git a/spec/lib/cache_spec.rb b/spec/lib/cache_spec.rb
new file mode 100644
index 000000000..680799d2e
--- /dev/null
+++ b/spec/lib/cache_spec.rb
@@ -0,0 +1,14 @@
+require 'rails_helper'
+
+describe 'Cache flow' do
+
+  describe 'Tag destroy' do
+    it 'invalidates Debate cache keys' do
+      debate = create(:debate, tag_list: "Good, Bad")
+      tag = ActsAsTaggableOn::Tag.find_by(name: "Bad")
+
+      expect{tag.destroy}.to change {debate.reload.cache_key}
+    end
+  end
+
+end