Configure cache stores

rely on RAM caching for devel, and optionally a memcached server in production

config/environments/development.rb

@@ -12,6 +12,8 @@ Osem::Application.configure do
   # since you don't have to restart the web server when you make code changes.
   config.cache_classes = false
 
+  config.cache_store = :memory_store, { size: 64.megabytes }
+
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false