可以动态添加新的 SDS 服务器，以分担查询工作负载和扩展可用性选项。
New SDS servers can be added dynamically to share query workload and expand availability options.
优化器使用表大小、索引可用性以及数据分布等信息来确定响应该查询的最佳路径。
The optimizer USES information such as table sizes, availability of indexes, and data distribution to figure out the optimal way to answer the query.
Lotus Expeditor还提供了网络感知api，使得应用程序能够查询物理的网络连接以及特定远程资源的可用性。
Lotus Expeditor also provides network awareness APIs enabling applications to query physical network connectivity as well as the availability of specific remote resources.
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