After discussing many data copy distribution modes, an optimized data copy distribution is proved in this paper.
对不同数据副本分布方式进行探讨，同时，论证了最优副本分布方案。
While your personal computer only keeps one copy of a file, large-scale services like Facebook rely on what are called content delivery networks to manage data and distribution.
虽然你的个人电脑只能保存一个文件的一个副本，但像Facebook 这样的大型服务项目，则会依赖于所谓的内容分发网络来管理数据和分发。
But there is a clear side-effect: the illicit distribution of multimedia data and very easy to copy, but the quality is not jeopardized.
但有一个显明的副作用：多媒体数据的非法传布和拷贝非常等闲，而且质量不受损害。
But there is a clear side-effect: the illicit distribution of multimedia data and very easy to copy, but the quality is not jeopardized.
但有一个明显的副作用：多媒体数据的非法传播和拷贝非常容易，而且质量不受损害。
But there is a clear side-effect: the illicit distribution of multimedia data and very easy to copy, but the quality is not jeopardized.
但有一个明显的副作用：多媒体数据的非法传播和拷贝非常容易，而且质量不受损害。
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