云计算的原理与技术(云计算中的基本概念和技术原理)

Cloud computing (cloud computing) is an Internet-based increase, use and delivery model of related services, usually involving the provision of dynamically scalable and often virtualized services over the Internet. resource. Cloud is a metaphor for network and Internet. In the past, cloud was often used to represent telecommunications networks in diagrams, and later it was also used to represent the abstraction of the Internet and underlying infrastructure. Therefore, cloud computing can even allow you to experience 10 trillion calculations per second. With such powerful computing power, you can simulate nuclear explosions, predict climate change and market development trends. Users access the data center through computers, laptops, mobile phones, etc., and perform calculations according to their own needs.
There are many definitions of cloud computing. There are at least 100 explanations for what exactly cloud computing is. Xiaoniao Cloud elastic cloud server has a pure SSD architecture and industry-leading hardware computing capabilities. It can be easily obtained and activated in the cloud in just a few minutes to meet your computing needs. While flexibly expanding resource usage, it can also save you computing costs and simplify IT operation and maintenance work.

Cloud computing (Cloud Computing) is the development of distributed processing (Distributed Computing), parallel processing (Parallel Computing) and grid computing (Grid Computing), or the commercial implementation of these computer science concepts. The basic principle of cloud computing is that by distributing computing over a large number of distributed computers rather than local computers or remote servers, enterprise data centers will operate more like the Internet. This enables enterprises to switch resources to needed applications and access computers and storage systems on demand. This is a revolutionary move. For example, it is like switching from the ancient single generator model to the centralized power supply model of a power plant. It means that computing power can also be circulated as a commodity, just like gas, water and electricity, which is easy to access and low-cost. The big difference is that it's transmitted over the Internet. The blueprint of cloud computing is already emerging: in the future, all we need is a laptop or a mobile phone to achieve everything we need through network services, even tasks such as supercomputing. From this perspective, the end user is the real owner of cloud computing. The application of cloud computing includes the idea of ​​uniting power and making it available to every member. In its most fundamental sense, cloud computing is the ability to leverage software and data on the Internet. For cloud computing, Kaifu Lee (Google's global vice president and president of China) made a vivid metaphor: a bank. At first, people just put money under their pillows. Later, banks were established, which was very safe, but it was more troublesome to cash out. Nowadays, banks can withdraw money from any bank branch, even through ATM or foreign channels. Just like when you use electricity, you don’t need to equip every household with a generator. You can buy it directly from the power company. "Cloud computing" brings such a change - professional network companies such as Google and IBM build computer storage and computing centers, and users can easily access them through a network cable with the help of a browser, turning the "cloud" As the center of data storage and application services. Cloud computing has currently developed two major areas: cloud security and cloud storage. For example, domestic Rising and Trend Micro have begun to provide cloud security products; while international leaders such as Microsoft and Google are more involved in the field of cloud storage.