write (ActiveSupport::Cache::FileStore)

    # File lib/active_support/cache/file_store.rb, line 15
          def write(name, value, options = nil)
            super
            ensure_cache_path(File.dirname(real_file_path(name)))
            File.open(real_file_path(name), "wb+") { |f| f.write(value) }
          rescue => e
            RAILS_DEFAULT_LOGGER.error "Couldn't create cache directory: #{name} (#{e.message})" if RAILS_DEFAULT_LOGGER
          end