And because the information is being loaded from RAM, and not from disk through a database and other processing, the access to the information is almost instantaneous.
并且由于信息是从ram而不是通过数据库和其他处理从磁盘加载的，所以对信息的访问几乎是瞬时的。
To reiterate, memcached is a cache for storing frequently used information to save you from loading and processing information from slower sources, such as disks or a database.
再强调一下，memcached是一个用来存储常用信息的缓存，有了它，您便无需从缓慢的资源，比如磁盘或数据库，加载并处理信息了。
You used Ruby on Rails as the processing interface to allow patients to add new patient records into the database, and subsequently go back and update their information.
通过使用Ruby on Rails作为处理接口，患者可以向数据库添加新的记录，并在以后更新信息。
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