Research On Storage Optimization Of A Blockchain Logistics System OP-Chain

The logistics are suffering many difficult problems,such as information blocking and duplication of resource allocation.All of the former problems restrict development of enterprises seriously and become the bottleneck in logistics development.In response to this problem,this paper designs a logistics information management platform--OP-Chain based on blockchain.The decentralized management of OP-Chain enables all participating companies to manage and use the information platform equally.Then enterprises can publish resources in public freely by function of shared data and transaction of OP-Chain.Enterprises can lease themselves logistics capability when they have free resources,which is needed for the other enterprises when their warehouse are full.The main work of this paper is as follows:1.The introduction of the IPFS file system proposes a blockchain storage optimization program OP-Chain.This solution migrates stored data to IPFS.And the unique identifier pointing to IPFS is stored on the blockchain.Thereby system can reduce the cost of using the blockchain.The test results show that it has greatly improved the block storage capacity reduction and data processing efficiency.The storage optimization has reached 90%,and the data processing efficiency is also better than the existing blockchain + IPFS scheme.2.Designing and implementing a sub-node query scheme for OP-Chain blockchain.The normal node and the master node are encrypted respectively after the data collected Solve the security problem of data in transmission.The reason for the secondary encryption of the master node is that the master node is responsible for organizing communication and encrypting when packing data.Subnode query uses different data query methods according to different node role permissions,and abandons the problem of low efficiency when querying different nodes caused by a single query method.The scheme ensures the efficiency of data query,make the query efficiency of IPFS +blockchain solution closer to the general blockchain system.3.Applying OP-Chain into the logistics information platform system,and design an information system with complete functions modules such as system interface,smart contract,data transmission logic,data storage module,query module,and transaction module.The test results show that the system can complete basic data storage,data query and other functions,and can expand data transaction functions.During the normal operation of the system,the occupancy rate of CPU was no more than 35%,and the occupancy rate of RAM was no more than 70%.The system throughput reached the average level of a normal information system.The innovations of this article are:1.Designing a blockchain data storage optimization program OP-Chain.This solution can effectively reduce the storage capacity of the blockchain.And applying OP-Chain into the logistics information management system,so that system can store data efficiently and security,while improving the efficiency of information circulation.Designing a secondary encryption + sub-node query solution to solve the problem of low efficiency of the blockchain + IPFS proposal.The secondary encryption can ensure the security of the data in the query process,and the sub-node query can effectively improve the processing efficiency of the data.2.Realizing the functions of data sharing and data transaction.This function using address Hash as a data carrier,is based on sub-node query.So that data can circulate between enterprises more conveniently and efficiently.