Sometimes this may just be a session id of some sort that can be used to retrieve server-side state from memory or a database.
有时候这仅仅是某种类型的会话id，它可以用来从内存或数据库检索服务器端状态。
The other alternatives for storing server-side state in J2EE applications is to use stateful session beans, or store conversational state in the database.
在J2EE应用程序中存储服务器端状态的其他方法是使用有状态会话bean，或者在数据库中存储会话状态。
However, the developer is responsible for the server-side state through the way a component or its properties are declared, which can be session-persistent.
然而，通过声明组件及其属性，开发人员需要管理服务器端的状态，这种状态可能是会话持久性的。
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