The strategy can adjust dynamically the frequency and content of data updating record according to the MC number and the data updating frequency,and the MCs will replace the data with its new value instead of clearing invalidated data item in the cache when they receive the updating record.
该策略根据数据的访问用户数目以及数据更新的频率等方法来动态调整服务器广播数据更新报告的频率及内容,在客户端接收服务器广播的数据更新报告后将缓存中已被更新过数据项的值用新值替换掉,而不直接将该数据项立即移出缓存。
This paper is concerned with a periodic review inventory system with fast and slow delivery modes and regular demand forecast updates.
本文研究在预报更新环境下具有快、慢两种配送方式和需求预报更新的库存系统。
Secondly the long-run average cost model is established based on renewal reward theorems,so the optimal order quantity and optimal expected cost models are obtained.
在假设库房工作和中断的持续时间分别服从独立的指数分布条件下,首先,确定库房库存循环的期望时间和费用,然后,基于更新报酬定理,构建它的长程平均费用模型,进而得到库房的最优订货量和最优期望费用模型。
