为了设置目标，请考虑在网络和应用程序级别要使用的性能标准以及哪些约束可能会影响性能。
To set the goal, consider what performance criteria to use at both network and application levels and what constraints may impact the performance.
问：在需要向一个节点中添加新机器时，必须加载J VM、配置系统和应用程序、设置网络地址，等等。
Question: When we need to add new machines in a node, then we must load JVMs, configure the system and the applications, set network addresses, etc.
该方案还记得当前的网络映射，安全设置和程序执行的所有现有应用程序。
The program remembers the current network mapping, security Settings and processes executed by all existing applications.
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