虚拟化让企业优化使用服务器，减少新服务器采购，从而降低了成本。
Virtualisation lowers costs by enabling firms to make better use of their servers and buy fewer new ones.
这种优化使用 惰性关联，而不是在下次调用方法时重新将连接句柄与托管连接关联。
Rather than reassociating the connection handle with the managed connection the next time a method is called, the optimization uses lazy association.
在以上论述的基础上，Todd针对优化使用BigTable存储系统总结了若干必须牢记的原则。
Given that, Todd Outlines some other principles to keep in mind for an optimized use of BigTable storage system.
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