Add some caching

app/views/asciicasts/_preview.html.slim

@@ -1,14 +1,15 @@
-.preview
-  = link_to asciicast, class: 'thumbnail-link' do
-    .play-button
-      span.arrow
-        span.glyphicon.glyphicon-play
-    .thumbnail
-      = asciicast.thumbnail(60, 15)
+- cache ['thumbnail', asciicast] do
+  .preview
+    = link_to asciicast, class: 'thumbnail-link' do
+      .play-button
+        span.arrow
+          span.glyphicon.glyphicon-play
+      .thumbnail
+        = asciicast.thumbnail(60, 15)
 
-  .info.clearfix
-    h2
-      = link_to asciicast.title, asciicast
-      span.duration = asciicast.formatted_duration
-    span.author-avatar = asciicast.author_img_link
-    small by #{asciicast.author_link} #{time_ago_tag asciicast.created_at}
+    .info.clearfix
+      h2
+        = link_to asciicast.title, asciicast
+        span.duration = asciicast.formatted_duration
+      span.author-avatar = asciicast.author_img_link
+      small by #{asciicast.author_link} #{time_ago_tag asciicast.created_at}

app/views/layouts/docs.html.slim

@@ -1,9 +1,10 @@
 - content_for :content do
-  .container
-    .row
-      .col-md-3
-        = render 'docs_topics', current_category: @current_category
-      .col-md-9
-        = yield
+  - cache do
+    .container
+      .row
+        .col-md-3
+          = render 'docs_topics', current_category: @current_category
+        .col-md-9
+          = yield
 
 = render :template => 'layouts/application'

app/views/layouts/pages.html.slim

@@ -1,5 +1,6 @@
 - content_for :content do
-  .container.pages
-    = yield
+  - cache do
+    .container.pages
+      = yield
 
 = render template: 'layouts/application'