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invalidation report
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  失效报告
     The multiversion-validation information(MV-VI)data broadcast mechanism with invalidation report is proposed that combinesmultiversion optimistic concurrency control protocol(MVOCC). Various multiversion broadcast disk organizations are introduced.
     结合多版本乐观并发控制协议(MVOCC)提出了带失效报告多版本-有效性检查信息(Multiversion-ValidationInformation,MV-VI)广播机制,并给出了多种多版本广播磁盘组织。
短句来源
     On the basis of BS scheme,middle invalidation report and broadcasting requested data items were introduced to reduce the query latency,improve the bandwidth utilization and reduce power consumption.
     因此,在位序列方案的基础上,引入中间失效报告以及请求数据广播的方法大大降低了查询延迟,提高了带宽利用率,从而降低移动客户端的能耗.
短句来源
  相似匹配句对
     Minority Report
     《少数派报告》
短句来源
     Meeting Report
     会议报道
短句来源
     Insight into the Current Meeting Report in Newspaper from the Invalidation of the Agenda-setting Function
     从议程设置的失效看当前的报纸会议报道
短句来源
     The Invalidation of Right Studies
     权利失效之浅析
短句来源
     Invalidation of anchor reinforcement
     锚固失效分析
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  invalidation report
While these schemes are based on periodic broadcast of invalidation reports, they allow clients to selectively tune to the portions of the invalidation report that are of interest to them.
      
This mechanism is, however, not energy efficient as clients are expected to examine the entire invalidation report.
      
In this paper, we reexamine the Bit-Sequences method and study different organizations of the invalidation report to facilitate clients to selectively tune to the portion of the report that are of interest to them.
      
While the approach has been shown to be effective, it is not energy efficient as clients are expected to examine the entire invalidation report.
      
The algorithm uses adaptable mechanisms to adjust the size of the invalidation report to optimize the use of a limited communication bandwidth while retaining the effectiveness of cache invalidation.
      
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In mobile computing environments,how to keep cache consistent in mobile client is a hot research spot. Broadcasting of invalidation reports is an efficient method,but it's difficult to choose the time window of invalidation reports because parameters are varying with environments and time. The time window of invalidation reports must be adjusted continuously while parameters are being updated, to ensure that the network system is working efficiently. In this paper,the formula for computing...

In mobile computing environments,how to keep cache consistent in mobile client is a hot research spot. Broadcasting of invalidation reports is an efficient method,but it's difficult to choose the time window of invalidation reports because parameters are varying with environments and time. The time window of invalidation reports must be adjusted continuously while parameters are being updated, to ensure that the network system is working efficiently. In this paper,the formula for computing the time window of invalidation reports in theory are proposed,the reasonable value is analyzed,and the algorithmic implementation is provided.

在移动计算环境中 ,如何维护移动客户机中数据缓存的一致性 ,是研究的一个热点 广播失效报告是一种有效的方法 ,但由于不同的环境 ,不同的时期各种参数的变化 ,失效报告时间窗口ω的大小如何确定是一个难点 时间窗口ω应随各种参数的变化而不断地进行调整 ,才能保证网络系统的传输工作在最有效的状态 从理论上推导了失效报告时间窗口ω的计算公式 ,分析了ω的合理取值 ,并给出了具体实现的算法

Cache invalidation schemes are an attractive approach for mobile computing environment . To affirm the validity of mobile host' cache content, servers periodically broadcast cache invalidation reports that contain information of data that has been updated. In this paper, we reexamine the issue of designing cache invalidation strategies and propose a categorical research method for cache schemes. Based on this method, many improving schemes can be constructed.

缓存失效报告法是在移动计算环境中普遍采用的缓存方案,即服务器定期广播缓存失效报告,该报告中包含了最近被更新的对象,根据报告内容,客户可使缓存中被更新对象失效,以保证缓存的有效性。缓存失效报告技术可采用多种策略,本文在研究多种缓存策略的基础上,提出了一种针对缓存失效方案的归类研究法,可对具体策略加以分析和评估,在此基础上对其性能进行改良,以形成更适应特定移动计算环境要求的缓存方案。

The multiversion-validation information(MV-VI)data broadcast mechanism with invalidation report is proposed that combinesmultiversion optimistic concurrency control protocol(MVOCC). Various multiversion broadcast disk organizations are introduced. The MI-VI databroadcast mechanism supports disconnection. During broadcast cycle, the global validation information(VI)of transactions is broadcasted. The fastinvalidation reports(FIRs)are inserted after the IR to broadcast frequently updated data. Detailed...

The multiversion-validation information(MV-VI)data broadcast mechanism with invalidation report is proposed that combinesmultiversion optimistic concurrency control protocol(MVOCC). Various multiversion broadcast disk organizations are introduced. The MI-VI databroadcast mechanism supports disconnection. During broadcast cycle, the global validation information(VI)of transactions is broadcasted. The fastinvalidation reports(FIRs)are inserted after the IR to broadcast frequently updated data. Detailed simulation experiments are carried out to evaluatethe proposed multiversion data broadcast mechanism. The results reveal that the performance of the MV-IV data broadcast mechanism issignificantly better than other methods.

结合多版本乐观并发控制协议(MVOCC)提出了带失效报告多版本-有效性检查信息(Multiversion-ValidationInformation,MV-VI)广播机制,并给出了多种多版本广播磁盘组织。MV-VI广播机制支持移动主机(MHs)与网络断接。在广播周期中广播事务全局有效性检查信息VI,IR广播后插入多个快速失效报告(FastInvalidationReport,FIR),广播快速更新的数据。通过模拟仿真,对MV-IV广播机制进行了性能测试,实验结果表明,MV-IV广播机制性能明显好于其它广播机制。

 
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