CDN computer mining

mining hang up is true, but the market hang up the good and bad, do not hang up

Mining is the use of bitcoin mining machine, which is used to earn bitcoin

one of the ways to get bitcoin is that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server

bitcoin is a kind of virtual currency. Bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware. Miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by miners, so the competition for mining is very fierce

mining is actually a competition of performance and equipment. The mining machine composed of many graphics cards, even if it's only hd6770, can surpass the single graphics card of most users

and this is not the most terrible. Some mining machines are made up of more such graphics card arrays. When dozens or even hundreds of graphics cards come together, the graphics card itself costs money. Considering the hardware price and other costs, there is a considerable expenditure in mining

bitcoin mining process:

1. To find the ore pool

to start mining, there must be a ore pool with convenient operation and stable output. Its function is to subdivide the data packets for each terminal, and pay the corresponding amount of bitcoin according to the proportion of the data packets calculated by the terminal through precise algorithm

2. Download bitcoin miner (software)

in fact, there are many kinds of this miner, you can go to the official website to download

3. Setting mining software is a green software. After installation, we can set the language first to facilitate further setting. Next, you need to set the server, user name, password, equipment and so on. Generally, the server chooses a better network from BTC guide series, and the user name and password are set by ourselves before

4, bitcoin mining start

when we confirm that all settings are correct, click the "start mining" button to start bitcoin mining, and then the graphics card will soon enter the full speed running state, the temperature and fan speed will increase, you can monitor the state through gpu-z or graphics card driver

1. Cloud storage: it is the storage part of cloud computing, which emphasizes storage and does not include distribution. Resources are put on the cloud storage platform of service providers, and users get resources from the cloud storage platform

2, CDN: contains two parts, one is cache, the other is distribution. When users access resources, they get resources from the cache server of the same network nearby. For example, Yunfan dcdn is a dynamic CDN, which places resources on the mining clients of miners all over the country, and users can access resources nearby

3, IDC: mainly for hosting and bandwidth leasing. In other words, IDC sells procts, while CDN sells acceleration services on the basis of IDC

extended data:

the relationship among the three:

1. Cloud computing and CDN are built on server clusters, that is, IDC. IDC is the hardware foundation of cloud computing. CDN can be built on IDC or cloud computing. Cloud can provide space, storage, database, cache, big data and so on

2. CDN is also a part of the cloud, which provides caching for the server and reces the pressure on the primary server. For the client, it can provide faster browsing and better experience. For example, watching video or live broadcast can read video from the CDN of each node in the cloud, instead of reading from the main server. For large traffic websites, the delay is greatly reced, and the customer experience is greatly improved

The emergence of digital RMB means that our life will be more convenient in some aspects. There will be new changes in the era of RMB exchange in cash. We can avoid the inconvenience and worry caused by carrying a large amount of cash at some times. In addition, the emergence of digital RMB also means saving a lot of work, no reproction, transportation of a lot of cash RMB, not only in some ways convenient for people's life, but also convenient for the relevant workers

Digital RMB is as important as cash RMB

both digital RMB and cash RMB are equally important in daily life. Even if people are used to using digital payment, it is impossible to carry mobile phones or keep sufficient power at all times. With the convenience of digital payment, young people enjoy this payment method for a period of time, but also found some limitations in some aspects. Digital payment needs to use mobile phones, need sufficient power, traffic, and also need a certain amount of time to operate. Therefore, cash and digital RMB are complementary and indispensable in use

User submits domain name → browser interprets domain name → gets IP address of destination host → sends request according to IP address → gets request data and replies

it can be seen from the above that the process of user accessing website without CDN cache is as follows:

1), user provides domain name to browser

2) the browser calls the domain name resolution function library to resolve the domain name to get the IP address corresponding to the domain name

through the above four steps, the browser completes the whole process from receiving the domain name from the user to obtaining the data from the domain name service host. CDN network is to add a cache layer between the user and the server. How to guide the user's request to the cache to obtain the data of the source server is mainly realized by taking over DNS. Let's take a look at the process of accessing the website after using CDN cache:

flow chart

from the above figure, we can see that, After using the CDN cache, the access process of the website becomes:

1), the user provides the domain name to the browser

from the above analysis, we can see that in order to be transparent to ordinary users (that is, after joining the cache, the user client does not need to make any settings, and can directly use the original domain name of the accelerated website to access, and to provide accelerated services for the specified website while recing the impact on ICP, we need to modify the domain name resolution part in the whole access process, To achieve transparent acceleration services

The full name of content distribution network (CDN) business is "the first kind of value-added telecom business license - CDN business license". It refers to that the enterprise uses the node server groups distributed in different regions to form a traffic allocation management platform to provide users with decentralized storage and caching services. CDN content distribution license is divided into whole network and ground network. The whole network license is handled by the Ministry of instry and information technology of the people's Republic of China, and the ground network license is handled by the provincial communication administration

enterprises need to meet the following conditions to apply for CDN license:

1, the operator is a company established according to law

2, the company's registered capital is more than 100W / 1000W

3, there are necessary sites and feasible technical solutions

4, there are personnel certificates suitable for carrying out activities

5, the company's reputation and ability to provide long-term services

6 There is no information related to telecom violation punishment within three years.

7. Other conditions stipulated by the state are as follows:

1, of business license

2, ID card of legal person and shareholder

3, articles of Association (need to be the latest, and the Bureau of instry and commerce should affix the file inquiry seal)

4 Social security certificate of three people in recent one month

5, ID card of company personnel, mobile phone and email of personnel

6, company landline, legal person mobile phone and email

7, providing operator cooperation agreement

certificate case