With the pull approach, achieving total data coherence with high network performance is very difficult.
使用拉取方式，要想达到完整的数据一致性以及很高的网络性能是很困难的。
For example a narrow data range may return less than 5% of your total data while a large data range may return almost 90% of data.
例如，一小段数据范围可能只返回数据总量的5%，而一大段数据范围可能返回数据总量的90%。
Total data rates for each network adapter by time of day.
每个网络适配器的每日各时段总数据速率。
Total data rates for each network adapter by time of day.
每个网络适配器的每日各时段总数据速率。
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