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基于相关子空间的高维离群数据检测算法

来源:用户上传      作者:赵向兵 张天刚

  摘要:^块链是具有去中心化、不可篡改的一种分布式账本,网络中每个节点都保存了相同的区块数据。但是,随着区块链运行时间的增长,区块链中节点需要保存和同步的数据随着时间暴涨,甚至超过存储介质容量增长的速度。针对此存储方面的性能问题,从区块链数据存储方面进行研究,通过分析当前区块链网络中每个节点保存相同数据的存储冗余状态,提出基于DHT的区块链数据归档方案,将区块数据分散存储在一定量的节点中,从归档数据构建、查找、与基础链交互三方面展开介绍,在保证区块链数据不丢失、可查询的情况下减少存储冗余,满足区块链落地应用中存储与访问的实际需要。
  关键词:分布式哈希表;区块链;存储;归档;区块;网络节点
  中图分类号:TP319文献标识码:A
  
  ADHTbasedBlockchainDataArchiving
  
  XIEJiagui,LIUHongyan,ZHANGBo,GUOJian,HUAYuqing
  (InstituteofIndustrialInternetandInternetofThings,ChinaInformation
  andCommunicationResearchInstitute,Beijing100191,China)
  Abstract:BlockchainisadistributedledgerwithdecentralizationandImmutabilitymainfeatures.Everynodeinthenetworksavesthesameblockdata.However,withblockchain’srunningtimeincreases,thedatathatnodesintheblockchainneedtosaveandsynchronizehasskyrocketedovertime,evenexceedingthegrowthrateofstoragemediacapacity.addressingperformanceproblemsindatastorage.Aimingattheperformanceproblemofdatastorage,thispaperconductsresearchfromblockchaindatastorage,byanalyzingthestorageredundancystateofeachnodeinthecurrentblockchainnetworktostorethesamedata,aDHTbasedblockchaindataarchivingschemeisproposed.Theblockdataisdistributedandstoredinacertainnumberofnodes,andthesolutionisintroducedfromthethreeaspectsofarchiveddataconstruction,search,andinteractionwiththebasicchain.Itreducesstorageredundancywhileensuringthattheblockchaindataisnotlostandcanbequeried,andmeettheactualneedsofblockchainapplications’sstorageandacces.

nlc202204191449



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