instance method write_entry

# File activesupport/lib/active_support/cache/mem_cache_store.rb, line 137
        def write_entry(key, entry, options)
          method = options && options[:unless_exist] ? :add : :set
          value = options[:raw] ? entry.value.to_s : entry
          expires_in = options[:expires_in].to_i
          if expires_in > 0 && !options[:raw]
            # Set the memcache expire a few minutes in the future to support race condition ttls on read
            expires_in += 5.minutes
          end
          rescue_error_with false do
            @data.with { |c| c.send(method, key, value, expires_in, options) }
          end
        end