instance method initialize_cache

# File railties/lib/initializer.rb, line 455
    def initialize_cache
      unless defined?(RAILS_CACHE)
        silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(configuration.cache_store) }

        if RAILS_CACHE.respond_to?(:middleware)
          # Insert middleware to setup and teardown local cache for each request
          configuration.middleware.insert_after(:"ActionController::Failsafe", RAILS_CACHE.middleware)
        end
      end
    end