Development And Research On Key Technologies Of Cloud Storage System

With the fast development of the science and technology, the cloud storage technology has emerged. We aim to solve the problem of wasted resource, low reliability, low efficiency, low upload and download efficiency and lacking of distinction about the cloud storage.The technica is applied to replace the original FTP storage and achieve more rapid rate, more security, closer to the users. We completed the design of the overall framework based on the FastDFS distributed file system, designed and achieved the core functional modules of the system, and finally completed the integration and optimization of the whole system.The main research work as below:1. To achieve the management of a large scale data files:Adopting the distributed file system----FastDFS, to solve the problem of management of massive files.2. To accomplish a complete set of business logic:Construct web service server layer, to achieve the functions of protecting user's personal account security, virtual directory mapping management, and interaction between front and back end.3. To ensure the correctness of users to upload and download files:The strategy of file checksums is adopted in this paper to solve the problem.4. To optimize the system performance:The use of file deduplication technology, the file seconds pass mechanism, uploading in blocks and downloading after merging to overcome this difficulty. The file deduplication technology and file's upload and download has further optimization.The research results are verified to meet the requirements of the project, the optimization of the cloud storage file upload and download efficiency can effectively enhance the user experience. It is important to improve user experience by optimizing the uploading and downloading strategy.Large file to deduplicate mechanism can effectively save storage resources, and the resulting file seconds pass mechanism greatly reduces the time the user to upload files. Meanwhile, it can improve the user experience and create great economy benefits.