The concept and principle of cloud computing

Cloud Computing (cloud computing, a kind of distributed computing technology, its most basic concept is to automatically split the huge computing process into countless smaller subroutines through the network, and then send the processing result back to the user by the large system of multiple servers after searching and calculating and analyzing. Through this technology, network service providers can in a few seconds, to deal with tens of millions of millions of information, to achieve the "super computer" and the same powerful network services.

The simplest cloud computing technology is ubiquitous in Web services, such as search engines, Web mailboxes, and so on, where users can get a lot of information by simply typing in a simple command.

The future, such as mobile phones, GPS and other action devices can be through cloud computing technology, the development of more application services.

Further cloud computing is not only the function of data search and analysis, but also can be easily achieved through this technology in the future such as analyzing DNA structure, sequencing of gene map, resolving cancer cells, etc.

The concept of "cloud computing" was the origin of the large scale distributed computing technology earlier.

Fundamentals of Cloud Computing

The basic principle of cloud computing is that enterprise data centers run more like the Internet by distributing computations across a large number of distributed computers rather than on local computers or remote servers. This allows the enterprise to switch resources to the required applications and to access the computer and storage systems as needed.

This is a revolutionary move, for example, from an ancient single generator to a power plant's centralized power supply model. It means that computing power can also be used as a commodity circulation, like gas, water and electricity, easy to use, low-cost. The biggest difference is that it is transmitted over the Internet.

The blueprint for cloud computing has come to pass: in the future, with just a laptop or a mobile phone, you can do everything we need through Web services, even tasks such as supercomputing. From this perspective, end users are the real owners of cloud computing.

The application of cloud computing consists of the idea of combining forces with each of these members.

The age of Cloud computing

At the moment, PCs are still the core tool in our day-to-day life-we use PCs to process documents, store data, and share information with others via email or u disk. If the PC hard drive is broken, we will be stranded because of data loss.

In the "Cloud computing" era, the cloud will do the work of storing and computing for us. "Cloud" is the computer group, each group includes hundreds of thousands of units, and even millions of computers. The benefit of the cloud is that the computer can be updated at any time to ensure that the cloud is immortal. Google has several such "clouds", and other IT giants, such as Microsoft, Yahoo and Amazon, have or are building such "clouds".

At that time, we only need a computer to be able to access the Internet, do not need to care about the storage or calculation of which "cloud", but once necessary, we can use any equipment, such as computers, mobile phones, to quickly calculate and find this information. We don't have to worry about losing data any more.

At a news conference on March 17, Schmidt made a figurative analogy. "Cloud computing," he said, "is like a bank ATM, and we don't have to carry a lot of cash out of the house, and we can get it anytime we want."

Kusheme, Google's engineer, argues that the PC era is like everyone needs to use electricity to buy their own generators, while in the "cloud computing" era, everyone does not have to have generators to buy electricity directly from large power plants.

"Cloud computing" is not really a new concept. According to Kusheme, "cloud computing" before, there are "grid computing" (grid Computing) and so on, the idea is about how the computer together to play a role. More than 10 years ago, when she was a graduate student, she knew the concepts, but the problem was that these concepts had never been well realized.

After Kusheme joined Google, she found that this kind of concept had been practiced. Google's technology allows hundreds of thousands of of computers to work together to form powerful data centers. Google China CEO Lee Kai-Fu, said in an interview with Caijing reporter that Google's real competitiveness lies in these "clouds", they let Google have the unmatched ability to store and compute global data.

At the beginning of its inception, Google did not deliberately pursue the concepts of "cloud computing" and "Grid computing". But as a search engine, Google needs these "clouds" objectively. In fact, Yahoo's search also uses "cloud computing".

     Cloud Computing is a new way of sharing infrastructure that can connect huge system pools together to provide a wide range of IT services. Many factors drive the need for such environments, including connectivity devices, real-time data streams, adoption of SOA, and rapid growth in WEB 2.0 applications such as search, open collaboration, social networking, and mobile commerce. In addition, the improvement of the performance of digital components has greatly increased the size of the IT environment, thus further strengthening the need for a unified cloud management.