如果memcached服务宕掉，应用程序应该回退到从原始数据源加载信息并对信息进行显示所需的格式化。
If the memcached service goes down, your application should fall back to loading the information from the original data source and formatting it as necessary for display.
比如，对于这个博客系统，您可能想要存储被博客应用程序使用的对象以便格式化博客信息，而不是原始的HTML。
For example, with the blog system, you may want to store the object used by the blog application to format the post information, rather than the raw HTML.
为了提高效率，一些应用程序可以将原始数据(而不是经过格式化的数据)保存到该缓冲区。
To improve efficiency, some applications keep raw data instead of putting the formatted data in the buffer.
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