摘要
针对传统云存储中数据冗余方法单一的缺点,提出了基于冷热数据的混合冗余方法。首先,根据当前数据块的访问频率设置数据块的更新周期;然后,引用时间衰减因子动态更新数据块的热度;最后,根据数据块的热度和系统平均热度动态调整数据块的冗余策略。实验结果证明,上述混合冗余方法与传统冗余方法相比,在一定程度上减少了移动平台的响应时间,提高了系统的性能。
In view of the single data redundancy method in conventional cloud storage, a hybrid redundancy method based on cold and hot data is proposed. First, the update period of the data block is set according to the access frequency of the current data block. Then, a time attenuation factor is introduced to dynamically update the heat of data block. Finally, the redundancy strategy of data block is dynamically adjusted according to the heat of data block and the average system heat. Experiments show that, compared with the conventional redundancy method, the hybrid redundancy method above not only decreases the response time of mobile platform to some extent, but also improves system performance.
作者
周阳
ZHOU Yang(GCI Science ＆ Technology Co.,Ltd.,Guangzhou 510310,China)
出处
《移动通信》
2018年第8期57-61,共5页
Mobile Communications
关键词
数据冗余
更新周期
动态调整
时间衰减因子
data redundancy
update cycle
dynamic adjustment
time attenuation factor
