系统还必须清除冗余数据。
给出了一复杂系统在造价约束下的可靠度和冗余数的并发优化设计结果。
A numerical result of an optimization design based on reliability and redundancy subject to cost in complex system is provided in the paper.
推拉结合的内容分发方案由于存在较多冗余数据和动态适应性较差等缺陷，一般只能适用于直播系统。
The push-pull combination content distribution strategy is general applied to live systems because of its limitation such as redundant packets, poor dynamic adaptability and so on.
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