config.action_dispatch.rack_cache should set explicitly to enable Rack::Cache

2 files changed, 14 insertions, 0 deletions

diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index c8a6600da9..b30e6ff615 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -297,6 +297,15 @@ module Rails
             error.message << ' Be sure to add rack-cache to your Gemfile'
             raise
           end
+
+          if rack_cache == true
+            rack_cache = {
+              :metastore => "rails:/",
+              :entitystore => "rails:/",
+              :verbose => false
+            }
+          end
+
           require "action_dispatch/http/rack_cache"
           middleware.use ::Rack::Cache, rack_cache
         end
diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt
index cb3e8b123e..3629920c30 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt
@@ -14,6 +14,11 @@
   config.consider_all_requests_local       = false
   config.action_controller.perform_caching = true
 
+  # Enable Rack::Cache to put a simple HTTP cache in front of your application
+  # Add `rack-cache` to your Gemfile before enabling this.
+  # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
+  # config.action_dispatch.rack_cache = true
+
   # Disable Rails's static asset server (Apache or nginx will already do this).
   config.serve_static_assets = false