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The core idea of cloud computing is to manage and schedule a large number of computing resources connected by the network in a unified manner to form a computing resource pool to serve users on demand.
1. Introduction
The core idea of cloud computing is to manage and schedule a large number of computing resources connected by the network in a unified manner to form a computing resource pool to serve users on demand.
2. Definition
Narrow Cloud Computing
The network that provides the resources is called the “cloud”. The resources in the “cloud” are infinitely scalable from the user’s point of view, and can be obtained at any time, used on demand, expanded at any time, and paid for according to usage. This feature is often referred to as using IT infrastructure like hydroelectricity.
Generalized cloud computing
“Cloud” is some virtual computing resources that can be maintained and managed by themselves, usually some large server clusters, including computing servers, storage servers, broadband resources and so on. Cloud computing centralizes all computing resources and manages them automatically by software without human involvement.
Someone made an analogy: This is like switching from the old single generator model to the centralized power supply model of the power plant. It means that computing power can also be circulated as a commodity, just like gas, water and electricity, with easy access and low cost. The biggest difference is that it is transmitted over the Internet.
In general, cloud computing can be regarded as a commercial evolution of grid computing.
3. Principle
The basic principle of cloud computing is that by distributing computing across a large number of distributed computers rather than local computers or remote servers, an enterprise data center will operate more like the Internet. This enables businesses to switch resources to the applications they need, accessing computers and storage systems on demand.
The application of cloud computing contains such an idea that the power is combined and used by each member.
4. Features
Data is safe and reliable
First of all, cloud computing provides the most reliable and safe data storage center, users no longer have to worry about data loss, virus intrusion and other troubles.
Many people think that data is safest only when stored on a computer that they can see and touch, but this is not the case. Your computer may be damaged due to your own carelessness, or attacked by a virus, which makes the data on the hard drive unrecoverable, and criminals who have access to your computer may take advantage of various opportunities to steal your data. On the contrary, when you upload your own photos to a network album like GooglePicasaWeb, you will never have to worry about data loss or damage. Because at the other end of the “cloud”, there is the world’s most professional team to help you manage information, and the world’s most advanced data center to help you save data. At the same time, strict permission management policies can help you share data with the people you designate with confidence. In this way, you can enjoy the best and safest service without spending money, and it is even more convenient than depositing money in the bank.
low client demand
Secondly, cloud computing has the lowest requirements on the equipment of the client and is the most convenient to use.
You can directly edit the documents stored on the other side of the “cloud” in the browser, you can share information with friends at any time, and you no longer have to worry about whether your software is the latest version, and no longer need to be infected with viruses for software or documents. worry.
Because at the other end of the “cloud”, there are professional IT personnel to help you maintain hardware, install and upgrade software, help you prevent viruses and various network attacks, and help you do everything you used to do on your personal computer.
Easily share data
In addition, cloud computing can easily realize the sharing of data and applications between different devices. Taking the management of contact information as an example, when you use network services to manage all contact information, you can use any computer to find a friend’s email address anywhere, and you can directly use any mobile phone to find the email address. Dial a friend’s phone number, or quickly share a contact’s electronic business card with several friends. Of course, all of this is carried out under strict security management mechanisms, and only those who have access to the data can use or share this data with others.
possibly infinite
Finally, cloud computing provides us with almost unlimited possibilities for using the network, almost unlimited space for storing and managing data, and almost unlimited powerful computing power for us to complete various applications. Imagine that when you are traveling by car, as long as you use your mobile phone to connect to the Internet, you can directly see the satellite map and real-time traffic conditions in your area, you can quickly check your preset driving route, and you can ask friends on the Internet. Recommend the best scenic spots and restaurants nearby, you can quickly book the hotel at your destination, and you can share the photos or video clips you just took with your relatives and friends in the distance.
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