Introduction To Network Topology

As data centers, Grid computing, supercomputing, cloud computing and other technologies and concepts rise, IT industry is also moving towards business model, technology architecture to management operations and other aspects of the direction of change. At the same time, cloud management technology has gradually entered our vision, the topic of cloud management also more and more hot. In terms of user requirements, technical features and functional composition, cloud management is mainly the management of data centers. The management focuses on the integration of key resources and business, visualization and virtualization, while Cloud management focuses on the allocation of resources on demand and the charging operation of the cloud.

The scalability of the system is the main reason for promoting the development of NoSQL movement, including distributed system coordination, failover, resource management and many other features. That makes NoSQL sound like a big basket that can be stuffed with anything. Although the NoSQL movement does not bring fundamental technological changes to distributed data processing, it still leads to extensive research and practice on protocols and algorithms. It is through these attempts to gradually summarize some effective database construction methods. In this article, I will focus on the NoSQL database distributed special ...

Since 2006, when Google introduced the concept of cloud computing, as a new technology and business model, the concept of divergent views. Various agencies and experts in related fields have defined cloud computing from different perspectives, such as some from the application scenario, and some from the resource angle. Among them, the September 2009 U.S. National Institute of Standards and Technology (NIST) proposed the definition of cloud computing, is very representative, has been widely accepted by the industry: "Cloud computing is a convenient access to a shared pool of resources, on-demand computing resources (these resources include network ...).

According to IDC's estimate, from the operating cost control point of view, in the IT industry, the cost of energy consumption has reached its hardware procurement costs of 25%. The data is rising at a compound annual rate of 52%. 　　When enterprises and large and medium-sized organizations face the changing business pressure and the data of exponential growth, it is necessary to consider and pay attention to the characteristics of environmental protection and energy saving in the data center. At the same time, the Enterprise data center areas of various products have been affixed to the "green energy-saving" label, a variety of "green energy-saving" as the main selling point of the new technology is also emerging ...

The scalability of the system is the main reason for promoting the development of NoSQL movement, including distributed system coordination, failover, resource management and many other features. That makes NoSQL sound like a big basket that can be stuffed with anything. Although the NoSQL movement does not bring fundamental technological changes to distributed data processing, it still leads to extensive research and practice on protocols and algorithms. It is through these attempts to gradually summarize some effective database construction methods. In this article, I will focus on the distributed features of the NoSQL database ...

Network Load Balancing allows you to propagate incoming requests to up to 32 servers that can use up to 32 servers to share external network request services. Network Load Balancing technology ensures that they can respond quickly even in heavy loads. Network Load Balancing must provide only one IP address (or domain name) externally. 　　If one or more servers in Network Load Balancing are unavailable, the service is not interrupted. Network Load Balancing is automatically detected when the server is unavailable, and can be quickly in the remaining ...

The drawbacks of "editor's note" Hadoop are also as stark as its virtues--large latency, slow response, and complex operation. is widely criticized, but there is demand for the creation, in Hadoop basically laid a large data hegemony, many of the open source project is to make up for the real-time nature of Hadoop as the goal is created, Storm is at this time turned out, Storm is a free open source, distributed, A highly fault-tolerant real-time computing system. The storm makes continuous flow calculation easy, making up for the real-time ...

Security is the key to the healthy development of mobile internet in cloud computing mode. At present, in the 3G network has become mature, mobile internet services have been widely popularized, more and more network and mobile security problems began to appear. Especially with the development of 3g/lte and the introduction of cloud computing Application model, the security problem of broadband mobile Internet becomes more complicated, which brings unprecedented challenge to the security of mobile Internet. Cloud computing virtualization, multi-tenant and dynamic introduced a series of new security issues, mainly in data security, privacy protection, content security, operating environment security ...

I. Application Background Nanjing University is a key comprehensive university directly under the Ministry of Education, founded in 1902, is located in Yuk, Shirong, the ancient capital of the Six dynasties of Nanjing. Including Drum Tower, Pukou, Xian Lin three campuses, beautiful scenery, large-scale construction, teaching, scientific research facilities advanced, has developed into a comprehensive strength ranked the forefront of the country's first-class universities. With good teaching and research support conditions, there are 127 kinds of institutes, 98 interdisciplinary research centers, and Modern Analysis Center, Network Information Center, Education Technology Center and other large-scale teaching and research experimental base. Reform Open ...

October 18, 2014,csdn& "programmer" sponsored by the 2014 Container Technical Conference (Container conference 2014) will be held in Beijing, domestic and foreign Container technicians and business practice users will be in Beijing for the first time. Docker, Google kubernetes, VMware, CoreOS, domestic internet companies and start-up technology team container technical experts and first-line developers will share their production environment ...