摘要
针对分布式机电系统远程全寿命周期运行监测庞大的海量数据分布式存储与管理的负载不均衡问题,提出一种基于权值比例分配各主机节点数量的分布式存储策略。分析分布式机电系统远程监测平台的数据流结构及其数据特征,建立基于一致性哈希算法的机电液数据的哈希环信息映射,同时引入虚拟节点解决哈希偏移问题。考虑各主机性能差异,基于权值分配虚拟节点,实现负载的自适应,并建立了虚拟节点的动态分配机制。试验结果表明:该存储策略具有良好的负载均衡性,较平均分配各主机节点数量的一致性哈希动态分配存储策略效果更好,能有效减少动态分配次数,使系统快速进入正常运行状态,实现数据的高效存储。
A distributed storage strategy based on weight ratio allocation of the number of host nodes was proposed to address the load imbalance problem of distributed storage and management of massive data in remote full life-cycle operation and monitoring of dis⁃tributed electromechanical systems.The data flow structure of the distributed electromechanical system remote monitoring platform and its data characteristics were analyzed,and a Hash ring information mapping of electromechanical fluid data based on a consistent Hash algorithm was established,while virtual nodes were introduced to solve the Hash offset problem.Considering the performance differ⁃ence of each host,virtual nodes were assigned based on weights to achieve load adaption,and a dynamic allocation mechanism of vir⁃tual nodes was established.The experimental results show that the storage strategy has good load balancing and is more effective than the consistent Hash dynamic allocation strategy which distributes the number of host nodes evenly,the number of dynamic allocations is effectively reduced,the system is enable to enter normal operation quickly and efficient data storage is achieved.
作者
刘沛津
王柳月
孙昱
史洁琳
晏东阳
LIU Peijin;WANG Liuyue;SUN Yu;SHI Jielin;YAN Dongyang(School of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an Shaanxi 710055,China;School of Science,Xi'an University of Architecture and Technology,Xi'an Shaanxi 710055,China)
出处
《机床与液压》
北大核心
2023年第22期31-38,共8页
Machine Tool & Hydraulics
基金
国家自然科学基金(61903291)
陕西省重点研发计划(2022GY-134)。
关键词
分布式机电系统
一致性哈希算法
海量数据存储策略
虚拟节点
权值动态分配
负载均衡
Distributed electromechanical system
Consistent Hash algorithm
Mass data storage strategy
Virtual node
Dynamic weight distribution
Load balancing
