add caching for real

Gemfile

@@ -54,6 +54,7 @@ gem 'sassc-rails'
 gem 'uglifier', '>= 1.0.3'
 
 gem 'unicorn'
+gem 'dalli'
 
 gem 'rack-piwik', '~> 0.3.0', require: 'rack/piwik'
 

Gemfile.lock

@@ -150,6 +150,7 @@ GEM
     css_parser (1.2.6)
       addressable
       rdoc
+    dalli (3.2.8)
     database_cleaner (1.7.0)
     date (3.3.3)
     dead_end (4.0.0)
@@ -456,6 +457,7 @@ DEPENDENCIES
   capybara (~> 3.38)
   coffee-rails (~> 5.0.0)
   country_select
+  dalli
   database_cleaner (~> 1.7.0)
   deadweight
   derailed_benchmarks

app/views/shared/_category_filter.erb

@@ -13,17 +13,17 @@
   <div class="col-md-8">
     <p id="tags_explantation" class="py-2 font-weight-bold <%= "d-none" unless params[:category_id] %>"><%= t(:filter, scope: 'category') %></p>
     <% @categories.each do |category| %>
-      <% cache category, expires_in: 1.hour do %>
         <span id="<%= category.short_name %>" class="btn btn-primary choose_all_tags mb-2 category-search category-search-<%= category.short_name %> <%= "d-none" unless category.id.to_s ==  params[:category_id] %> ">
           <%= t(:choose_all_button, scope: 'category', category_name: category.name ).html_safe %>
         </span>
-        <% end %>
     <% end %>
     <div class="tab-content mb-3" id="available-tags-box">
       <% @categories.each do |category| %>
-        <div style="min-height: 300px" class="tab-pane fade <%= "active show" if category.id.to_s == ( params[:category_id]  || @category.id.to_s )%>" id="v-pills-<%= category.short_name %>" role="tabpanel" aria-labelledby="v-pills-<%= category.short_name %>-tab" >
-          <%= render partial: "shared/tagbox", locals: { :tags => instance_variable_get("@tags_#{category.short_name}"), :category => category } %>
-        </div>
+        <% cache category, expires_in: 1.hour do %>
+          <div style="min-height: 300px" class="tab-pane fade <%= "active show" if category.id.to_s == ( params[:category_id]  || @category.id.to_s )%>" id="v-pills-<%= category.short_name %>" role="tabpanel" aria-labelledby="v-pills-<%= category.short_name %>-tab" >
+            <%= render partial: "shared/tagbox", locals: { :tags => instance_variable_get("@tags_#{category.short_name}"), :category => category } %>
+          </div>
+        <% end %>
       <% end %>
     </div>
     <div id="selected-tags-box" class="my-3">

config/environments/production.rb

@@ -57,7 +57,9 @@
   config.log_tags = [ :request_id ]
 
   # Use a different cache store in production.
-  config.cache_store = :memory_store, { size: 64.megabytes }
+  if ENV["MEMCACHEDCLOUD_SERVERS"]
+    config.cache_store = :mem_cache_store, ENV["MEMCACHEDCLOUD_SERVERS"].split(','), { :username => ENV["MEMCACHEDCLOUD_USERNAME"], :password => ENV["MEMCACHEDCLOUD_PASSWORD"] }
+  end
 
   # Use a real queuing backend for Active Job (and separate queues per environment)
   # config.active_job.queue_adapter     = :resque