Online Trends

Deferred deserialization: A method for improving the performance of MapReduce programs Jia the MapReduce Parallel Computing framework provided by Hadoop, users can realize parallel computing conveniently. Typically, the user resolves the input data into a string delimited by a particular delimiter in the MapReduce program, and the cost of deserialization and serialization is too high, and the conversion of the data type during the calculation can incur additional overhead. In this paper, a delay deserialization technology is integrated into the MapReduce program to achieve the mapred ...

First, data room availability classification of the current general classification standards, is based on the United States computer room construction standards, the data room availability level is divided into four level level 4 level 3 level 2 level 1 redundancy capability can be online maintenance redundancy without redundant availability 99.99999% above 99.999% Above 99.9%, the application environment classification according to the application environment classification, the various computer rooms are divided into the following 5 kinds of typical application types, each type of application, Yi ...

Design and implementation of a microblogging user impact evaluation algorithm based on MapReduce Architecture Square Super Bin Li Aiping with the rapid development of the Internet and the advent of the Web2.0 era, Weibo users are growing at an alarming rate. Sina Weibo is based on the number of fans, Under the influence of zombie powder and a large number of low usage accounts, this simple ranking is difficult to characterize the user's influence. This article takes the massive Sina microblogging data as the analysis object, constructs the microblogging user's shadow in the distributed system.

A data storage technology of map tile based on NoSQL Chen, Liang, Hao Wen, Juagen, Li Yuxiang, Shu Fangfibenwen Firstly, this paper introduces the origin and development of NoSQL (non relational database), compares the advantages and disadvantages of the relational database, and puts forward the storage strategy of map tile data based on NoSQL. The difference between the MONGO DB and SQL Serv-er 2000 in the storage and concurrent access performance of the NoSQL database products oriented to document is analyzed by experiment. The results show that the Mongo db in the mass space number ...

A dynamic cloud storage data integrity verification method based on Homomorphic label Yu Shing in the cloud storage service, a Dynamic Data integrity verification method based on Homomorphic label is proposed to enable users to verify the integrity of the data stored on the cloud storage server at any time. By introducing the homomorphism label and the user randomly selecting the data block to be detected, the data can be validated indefinitely. and support data dynamic update; the introduction of trusted third party solves the dispute of data integrality between cloud user and cloud storage service provider, and realizes the public verification of data integrality, then gives the method ...

Design and implementation of an iSCSI SAN based on cloud computing platform Wu Hui Liujiangtao Chen Jianbing Xiaomengxiong Journal of Yunnan Normal University (natural Science Edition) 2014 phase 03 a cloud-based platform based iSCSI

An adaptive fault detection method for reliable cloud computing Xiaminna Candrian Sho Juan An adaptive fault detection method for cloud system reliability is proposed. First, based on the step Index search algorithm and the index space separation technology to extract the cloud index, the maximum correlation standard and minimum redundancy standard for describing cloud behavior and health status are obtained, then the cloud index data points are mapped from data space to kernel space by using the minimum closed sphere, and the low dimension data is entered into the fault detector. An adaptive fault detection method for reliable cloud computing

An adaptive load-balancing method for streaming media cloud service platform Jiangxiaoping, Zhang, Li Chenghua, Jiangteng designed a streaming media service platform architecture based on cloud computing technology, and proposed an adaptive load balancing method for cloud computing resources for this service platform. To improve the resource utilization of the platform and reduce the rate of service rejection test results show that this method is suitable for load balancing scheduling of streaming media cloud service platform. An adaptive load-balancing method for streaming media cloud service platform

A resource allocation mechanism for cloud service providers Simpo Wang Chireson Meng Loming The revenue problem of market behavior among users, service providers (SPS) and infrastructure providers, this paper presents a two-stage virtual machine resource allocation mechanism for service providers. First, the capacity planning model is established and the particle swarm algorithm is introduced to decide the resource purchase scheme for maximizing the revenue of service providers. Then, a service delivery strategy to optimize customer satisfaction is proposed, which optimizes the long-term benefits of service providers. ...

Research on a new DCCEM dynamic Cloud task assignment algorithm Liu Junhua Cai Weihong Reyshuyang proposed a dynamic cloud task assignment algorithm architecture model, its algorithm can distribute cloud task evenly to cloud group server, taking into account the different cloud server for different business capabilities, to solve the cloud server load balance, And the efficient use of CPU resources, so that users get higher service efficiency, and the cloud group environment of computing and storage resources are effectively managed. Through simulation comparison and analysis, the technology is effective, can fully benefit ...

Mobile video in Cloud Music network CTO Yeoh Eng-Kiong Fifth China Cloud Computing conference download address: Http://bbs.chinacloud.cn/showtopic-17847.aspx

Design and implementation of virtual network in cloud management platform Dalian Wang Tao with the increasingly sophisticated network technology and the rapid development of E-commerce, in the 3G mobile Internet and information hard demand driven, IaaS Cloud management platform is to apply the concept of cloud computing to the Internet Data Center (IDC) A new kind of cloud management platform. In the IaaS Cloud management platform The virtual network management system uses the Java EE architecture MVC design pattern. The database server employs Oracle database databases, which are highly reliable 、...

Study on the calculation method of the shortest distance for privacy protection in cloud environment Zhang Light Susen Chen Wei Yang Spring release a kind of protection edge value information privacy security based on Homomorphic encryption algorithm the method of calculating the shortest distance between nodes This method encrypts the weighted information of the edge and then outsource the encrypted data to the cloud platform using the breadth-first principle. The cloud server can compute the shortest distance between the initial node and the other nodes directly from the initial node to the encrypted graph data, and compute the shortest distance between any two nodes by the client and the cloud server side.

Product knowledge acquisition and learning model in cloud environment Zhang Taihua He Hibao Chao According to the characteristics of product knowledge resources in cloud environment, this paper gives a framework of product knowledge acquisition in cloud environment, which is composed of enterprise user layer, cloud knowledge platform layer and knowledge resource layer, and establishes product knowledge acquisition process model under cloud environment, Through this model, the product design, manufacturing and service knowledge mining, collection, analysis, induction, collation and storage, and put forward the cloud environment of product knowledge ...

A virtual machine deployment algorithm for reducing energy consumption in cloud environment Zhou Zhou Hu Zhigang to reduce the energy consumption of large-scale data centers, a virtual machine (VR Machine, VM) deployment algorithm is proposed TESA (Three-threshold power Saving algorithm) This algorithm uses energy consumption and processing resource utilization to linear relationship, will overload and load over light host ...

Research on ciphertext search technology in cloud environment Beijing, Beijing, China posts a new and efficient method for searching public key Cryptography (Nscf-peck) is proposed in this paper. The scheme is based on bilinear pair structure and uses public channel to transmit ciphertext. In the design of the whole algorithm, only two times bilinear pair operation is used, which greatly reduces the computational expenditure of the searchable public key cryptography. Meanwhile, using public channel to transmit encrypted data between client and cloud server reduces the cost of constructing secure channel. Finally, this paper proves that nscf-pec ...

Research on elastic evaluation model and tool of cloud computing Ying Chen, Shanghai Jiaotong University This paper analyzes and gives the definition of elasticity in cloud computing environment. Then, based on the analysis of the shortcomings of the existing benchmark methods, this paper designs and implements a kind of flexible evaluation method and tool which is oriented to service level protocol and driven by workload. This paper focuses on the platform elasticity Evaluation Index and evaluation model under cloud service environment, and puts forward a complete elastic evaluation model, including workload design, calculation model design and elastic evaluation index. On the basis of the above elastic evaluation model, the paper ...

Research on data storage and control technology of cloud computing environment Lu Peibei Research of North China University of Technology based on the current popular cloud computing, first, from the current domestic and foreign research situation of cloud, the paper studies some advantages and disadvantages of cloud storage, based on the Distributed file system HDFs of current more mature open source cloud platform Hadoop, This paper analyzes the advantages and disadvantages of the Distributed file system, and then expounds the significance of the research on the security of cloud storage and the convenience of storage for future applications. The important Internet-related technical part used in the study ...

Research and design of CA certification center in cloud computing environment the Sheng Yuwei cloud computing as a new concept, new service model is proposed, IT industry is a new direction. Cloud computing on-demand services, reasonable use of resources, simple deployment model and other advantages in the future can not only effectively promote the development of computers, but also can significantly improve people's lives and working methods. However, security issues have been accompanied by the development of cloud computing, but also hindered the development of cloud computing. The Certification center (CA) is the core of the public Key Infrastructure (PKI), in the security ...

Research on task scheduling of PDTs virtual machine in cloud computing environment Nanjing Information Engineering University Zhang Jie this paper, based on the analysis of Cloud computing task scheduling objectives, models, processes and characteristics, mainly does the following: (1) Introduce the definition, service type, architecture and characteristics of cloud computing. At the same time, the model, target and QoS requirements of task scheduling in cloud computing environment are analyzed, and the process and characteristics of cloud computing task scheduling are described. (2) A new task scheduling is proposed by studying the independent task scheduling model and workflow task scheduling model under the existing cloud computing environment.