【摘要】：互聯(lián)網(wǎng)的發(fā)展已經(jīng)進(jìn)入一個(gè)“云”時(shí)代,并成為炙手可熱的課題。國內(nèi)外很多互聯(lián)網(wǎng)公司(如微軟、百度、奇虎360、華為、金山等)相繼發(fā)布為用戶提供幾乎免費(fèi)的大容量永久存儲(chǔ)服務(wù)。近年來,智能移動(dòng)終端設(shè)備的發(fā)展蒸蒸日上,因此,提供移動(dòng)終端的云服務(wù)將是一個(gè)必然的發(fā)展趨勢(shì)。 本文旨在研究與設(shè)計(jì)一套完整的基于MooseFS分布式文件系統(tǒng)的移動(dòng)云盤系統(tǒng),主要包括三大模塊,即存儲(chǔ)服務(wù)器、Web服務(wù)器以及Android客戶端。其中： (1)在存儲(chǔ)方面,通過分析MooseFS分布式文件系統(tǒng)的負(fù)載均衡算法,在均衡存儲(chǔ)空間利用率和縮短用戶平均等待時(shí)間兩個(gè)方面進(jìn)行了算法優(yōu)化,使得存儲(chǔ)空間利用率的方差值減少了1.11016E-5,用戶平均等待時(shí)間縮短了0.41個(gè)單位,同比降低了18.9%； (2)在Android客戶端方面,通過對(duì)文件下載的相關(guān)研究,結(jié)合多線程下載理論,提出了一種在網(wǎng)絡(luò)環(huán)境較差時(shí)的自適應(yīng)分塊下載策略,使得用戶處于弱網(wǎng)環(huán)境時(shí)仍然能夠進(jìn)行文件下載。 (3)解決了使用Android操作系統(tǒng)圖庫調(diào)用接口無法進(jìn)行批量選擇的問題。 本文所設(shè)計(jì)的云盤系統(tǒng)中,Android客戶端與Web客戶端共用一個(gè)數(shù)據(jù)庫,減少用戶數(shù)據(jù)的冗余存儲(chǔ)。其主要功能包括新浪微博賬號(hào)登錄、本機(jī)圖庫文件的批量選擇與上傳、拍照立即上傳、帶圖片的微博發(fā)布、云盤文件的下載、小組文件的共享、普通文件的上傳與下載等。該系統(tǒng)已部署在CGSP (ChinaGrid Supporting Platform)平臺(tái)中為用戶提供服務(wù)。
[Abstract]:The development of the Internet has entered a "cloud" era, and has become a hot topic. Many Internet companies at home and abroad (such as Microsoft, Baidu, Qihu 360, Huawei, Jinshan, etc.) have released almost free mass storage services for users. In recent years, the development of intelligent mobile terminal devices is booming, so providing cloud services of mobile terminals will be an inevitable development trend. The purpose of this paper is to study and design a complete mobile cloud disk system based on MooseFS distributed file system, which includes three modules: storage server web server and Android client. Among them: (1) in the aspect of storage, by analyzing the load balancing algorithm of MooseFS distributed file system, we optimize the algorithm in two aspects: balancing the utilization of storage space and shortening the average waiting time of users. The square difference of storage space utilization is reduced by 1.11016E-5, and the average waiting time of users is shortened by 0.41 units, which is 18.9% lower than the same period of last year. (2) in the aspect of Android client, through the research of file downloading, combining with the theory of multi-thread downloading, In this paper, an adaptive block downloading strategy is proposed when the network environment is poor. Users can still download files in a weak network environment. (3) the problem that the calling interface of Android operating system library can not be selected in batches is solved. In the cloud disk system designed in this paper, the Web client and the Web client share a database to reduce the redundant storage of user data. Its main functions include login of Sina Weibo account, batch selection and uploading of files in this computer, immediate uploading of photos, Weibo publishing with pictures, downloading of cloud disk files, sharing of group files, uploading and downloading of ordinary files and so on. The system has been deployed in the CGSP (ChinaGrid Supporting Platform) platform to provide services to users.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP333

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