| With the rapid development of society,the growth of demand for talents has prompted the continuous expansion of the market size of education and training institutions.In the context of learning for all,ensuring the quality of education and training has also become the focus of social attention.Traditionally,many education and training institutions adopt a centralized management platform,resulting in a lack of effective supervision among various institutions.There are also problems such as data falsification and tampering with training-related information,which makes the security and credibility of training data not guaranteed.And in practical applications,the system also faces many challenges,such as low operating efficiency and data storage performance.In order to solve the problems faced by the education and training industry,this thesis designs an education and training management system based on Hyperledger Fabric in combination with blockchain technology,which effectively realizes the information exchange between education departments,training institutions,human resources centers,and other relevant departments on the chain nodes,ensuring The authenticity and traceability of data provide a safe and reliable solution for the education and training management process.First,analyze the advantages of blockchain technology applied to education and training scenarios through the business requirements of actual scenarios.Describe the main roles and business processes involved in the system through data modeling and ER diagrams.According to the analysis of functional requirements and non-functional requirements,clarify the functional modules required by the system and a series of requirements such as system performance,compatibility,and security.In the system design stage,the overall architecture design of the system and the detailed design of the system function modules are given,and the system is divided into three layers: the application service layer,the core layer,and the data storage layer.Each layer is independently developed and passed through the specified API.Or the SDK passes the request,and the core layer uses the raft algorithm to sort the service.In addition,the main table structure in the database under the system chain is described,and the key fields are explained.Secondly,in order to solve the problems of low storage performance and query efficiency caused by a large amount of data,the system uses various databases such as My SQL and Couch DB for data storage.According to different business data types,design a specific ledger structure,take advantage of the storage advantages of different databases,and optimize the system storage scheme.Then,a multi-task load optimization model is proposed to realize the balanced forwarding of on-chain agents,so as to relieve the huge pressure on the single-point on-chain and improve the system query efficiency and transaction throughput.And combined with several cutting strategies proposed by Hyperledger Fabric,properly adjust the network configuration and transaction scale on the chain and conduct multiple comparative experiments to analyze the impact of network configuration on system performance.In order to further improve the query efficiency of the system,a Bloom filter component is embedded in the network,and a fast tracing scheme on and off the chain is designed.Finally,the detailed implementation process of blockchain components such as identity management and smart contracts in the system is given.Through joint management of private data and access control policies,the legality of data access in the network is ensured and unauthorized access is prevented.By developing reasonable smart contracts to meet different business logic requirements,the credibility of the system is improved.After a variety of tests,the implemented education and training system can achieve the expected results in terms of functional and non-functional requirements and has strong practicability in multi-node education and training scenarios. |
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