Blockchain digital technology expert Ben

1.

From the perspective of technology and architecture, I will tell you my understanding of blockchain in common language

what is blockchain? In a word, blockchain is a storage system. To be more specific, blockchain is a distributed storage system without an administrator and each node has all the data

What are the common storage systems like

first, how to ensure high availability

the common storage system usually uses "rendancy" to solve the problem of high availability. As shown in the figure above, if the data can be copied into several copies and rendant to multiple places, high availability can be guaranteed. The data in one place is hung, and there is data in other places. For example, the master-slave cluster of MySQL is the same principle, and the raid of disk is also the same principle

two points need to be emphasized in this place are: data rendancy often leads to consistency problems

1. For example, in the master-slave cluster of MySQL, there is actually a delay in reading and writing, which means there is a inconsistency in reading and writing in a short period of time. This is a side effect of data rendancy

The second point is that data rendancy often reces the efficiency of writing, because data synchronization also consumes resources. If you add two slave libraries, the write efficiency will be affected. The common storage system is to use rendancy to ensure the high availability of data

so the second question, ordinary storage system, can write more

the answer is yes, for example, take this graph as an example:

in fact, MySQL can do a master-slave synchronization of al masters, master-slave synchronization of al masters, two nodes can be written at the same time. If you want to do a multi room multi live data center, in fact, multi room multi live data synchronization. What we should emphasize here is that multi-point writing often leads to the consistency problem of writing conflicts. Take MySQL as an example, suppose that the attribute of a table is self incrementing ID, then the data in the database is 1234 now. If one of the nodes writes and inserts a piece of data, it may become 5, and then these 5 pieces of data are synchronized to another master node, Before synchronization, if another write node inserts a piece of data, a piece of data with self incrementing ID of 5 will be generated. Then, after the generation, synchronize to another node, and the synchronized data will conflict with the two local 5's after it arrives, which will lead to synchronization failure and write consistency conflict. This problem will occur in the case of multi-point writing

how to ensure consistency in multi-point writing

the reform "Swan class" gives you more technical work

2. Blockchain Technology Application Research Center is an institution directly under the blockchain Technology Application Research Institute.
the blockchain Technology Application Research Institute was established in Zhengzhou City, Henan Province under the policy guidance of the Ministry of Commerce, the Ministry of instry and information technology and the Ministry of science and technology.
initiated by the SME Development Promotion Association, it is a well-known professional analyst, the most authoritative blockchain research expert in China, and an expert professor in Colleges and universities, CEOs of well-known enterprises participate in
research institutes that provide Zhongyuan enterprises with blockchain technology landing solutions. It is the first and the only third-party technology research institution established in China to study the communication and service blockchain technology
based on the working principles of authority, standardization, systematicness, openness and public welfare, the blockchain Technology Application Research Institute assists the government in formulating the instry supervision mechanism and assisting the government in promoting landing solutions. It aims to provide Zhongyuan enterprises with the research and promotion of blockchain technology landing scheme, popularize and enhance the concept and awareness of the majority of enterprises for blockchain technology, play a guiding role in the development of Zhongyuan, promote the healthy and orderly development of Zhongyuan blockchain technology, and help the economic rise of Zhongyuan
the blockchain Technology Application Research Institute will support 1000 Central Plains enterprises to implement blockchain technology application within two years by docking with one billion capital resources, so as to help the Central Plains economy to overtake.

3. Blockchain is a key project in the 13th five year plan for national informatization. It is parallel with artificial intelligence, big data, driverless and other projects. With the support of the government, blockchain technology has developed rapidly, and China's blockchain instry is expected to take the lead in the world. At present, the number of domestic blockchain related companies is increasing, of which fast online has been in the lead

4. QQ coin is a kind of virtual currency issued by Tencent in order to facilitate users to purchase the virtual goods and services it provides. Its official price is: 1q coin = 1 yuan. However, if the amount of recharge is large, there will be a certain amount of discount on some recharge platforms
it should be noted that this is the recharge price. If it's selling q-coin, because q-coin recycling is now done by some third-party platforms, there will be a certain cost. Therefore, the recovery price of Q coin is generally lower than the recharge price, remember!

5. It seems that it is not within the scope of demolition for the time being

6. I normally use the algorithmic cat aggregate payment, which is very convenient to use, especially the bookkeeping function, which saves a lot of time. I can check the accounts at any time and make it clear at a glance (qiaohu)

7. Alchemy is to help physical stores open aggregate payment. If you use Alchemy to collect money, you can get alchemy every time you collect money. The higher the alchemy, the more points you get every night. This point can be realized!

8. One of the earliest scholars engaged in the research of blockchain technology in China has proposed and developed such theoretical methods as smart contract engineering (SCE), legal code technology, and verification as a service (VAAs), which are applied in the combination of digital economy and blockchain, planning and consulting of digital economic Park, digital governance of blockchain, scalability of blockchain, and so on There are in-depth research and patent achievements in Multi Chain interconnection and blockchain formal verification technology.

9. Blockchain is a database storage system that is distributed all over the world and can operate cooperatively. It is different from the traditional database operation that the read and write permissions are controlled by a company or a centralized hand (the centralized feature). Blockchain believes that anyone who has the ability to set up a server can participate in it. Gold diggers from all over the world deploy their own servers locally and connect to the blockchain network to become a node in the distributed database storage system; Once joined, the node enjoys the same rights and obligations as all other nodes (decentralized, distributed features). At the same time, for those who carry out services on the blockchain, they can read and write to any node in the system. Finally, all nodes in the world will synchronize one after another according to some mechanism, so that the data of all nodes in the blockchain network is completely consistent.