read_entry

# File activesupport/lib/active_support/cache/memory_store.rb, line 125
        def read_entry(key, options) # :nodoc:
          entry = @data[key]
          synchronize do
            if entry
              @key_access[key] = Time.now.to_f
            else
              @key_access.delete(key)
            end
          end
          entry
        end