However, this also introduces some challenges, such as session management.
然而，这也引入了一些挑战，如会话管理。
Fundamental J2EE concepts such as session or Web application are not aware of the notion of a virtual portal.
基本的J2EE概念(例如会话或Web应用程序)并没有虚拟门户这一概念。
Therefore, important aspects of the code, such as session invalidation and support for failover, are not included.
因此未包含代码的某些重要方面，例如会话失效和故障转移支持等。
The user would only experience "normal" behavior if the targeted external site handled its own state management using normal Web techniques such as session cookies.
只有目标外部站点使用会话Cookie等普通Web技术来处理自己的状态管理时，用户才会看到“通常”的行为。
It provides more complex and powerful functions than a Web server does, such as session management, load balancing, messaging, transaction management, security, etc.
相对于Web服务器，它提供了更为复杂和强大的功能，例如会话管理、负载平衡、消息传递、事务管理、安全，等等。
There are a number of practical improvements to the eventual consistency model, such as session-level consistency and monotonic reads, which provide better tools for the developer.
有很多改善最终一致性模型的实用方法，比如会话级别的一致性和单调读一致性，它们都为开发人员提供了更好的工具。
There are a number of practical improvements to the eventual consistency model, such as session-level consistency and monotonic reads, which provide better tools for the developer.
有很多改善最终一致性模型的实用方法，比如会话级别的一致性和单调读一致性，它们都为开发人员提供了更好的工具。
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