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Distributed storage in blockchain
Publish: 2021-04-28 15:14:33
1. In short, the data of the blockchain is formally stored in the blockchain through the formula algorithm process of the block. All nodes in the whole network express that they accept the block, and the way to express acceptance is to make the random hash value of the block the latest block hash value. Xingqun manufacturing will be extended based on the blockchain.
2. Blockchain distributed storage is a kind of decentralized storage, which does not store data on one or more specific nodes, but scattered storage
3. The analysis of Chongqing jinwowo is as follows:
distributed structure means that the blockchain system adopts open source and decentralized protocol to ensure complete data recording and storage
each transaction information in the blockchain is sent to all nodes in the whole network by the current node. Therefore, the information interceptor cannot successfully intercept the information through a certain information propagation path, because each node receives the information.
distributed structure means that the blockchain system adopts open source and decentralized protocol to ensure complete data recording and storage
each transaction information in the blockchain is sent to all nodes in the whole network by the current node. Therefore, the information interceptor cannot successfully intercept the information through a certain information propagation path, because each node receives the information.
4. One is that each node of the blockchain stores complete data according to the block chain structure. Traditional distributed storage generally divides the data into multiple copies according to certain rules
Second, the storage of each node in the blockchain is independent and has the same status, which relies on the consensus mechanism to ensure the consistency of storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes
data nodes can be different physical machines or different instances in the cloud
the above is the difference between the blockchain technology of jinwowo network analysis and the traditional distributed storage, for reference.
Second, the storage of each node in the blockchain is independent and has the same status, which relies on the consensus mechanism to ensure the consistency of storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes
data nodes can be different physical machines or different instances in the cloud
the above is the difference between the blockchain technology of jinwowo network analysis and the traditional distributed storage, for reference.
5. Centralized storage and distributed storage
most of the current storage is centralized storage, which is stored in the traditional centralized server. If the server goes down or fails, or the server stops operating, a lot of data will be lost
blockchain, as a distributed database, can solve this problem well. This is determined by the technical characteristics of blockchain. The digital records on the blockchain can not be tampered with or forged. The smart contract enables us to work together more efficiently, so as to establish a credible digital economic order, improve the efficiency of data flow, break the isolated island of data, and create a new storage mode.
most of the current storage is centralized storage, which is stored in the traditional centralized server. If the server goes down or fails, or the server stops operating, a lot of data will be lost
blockchain, as a distributed database, can solve this problem well. This is determined by the technical characteristics of blockchain. The digital records on the blockchain can not be tampered with or forged. The smart contract enables us to work together more efficiently, so as to establish a credible digital economic order, improve the efficiency of data flow, break the isolated island of data, and create a new storage mode.
6. IBM, Microsoft, Oracle, Accenture, Tencent, Alibaba, Jingdong, network, etc. have all done it. Many large banks, including Ping An Bank, have also launched their own blockchain solution platforms or solutions. However, it should be added that large companies do not mean strong technical strength, because blockchain is still in the hot stage of concept in the world. Unicorn blockchain companies are likely to emerge in the future, such as EOS abroad and Binhe Yun patent technology and application landing in China are much higher than those of large companies.
7. There are two ways to connect the core switch to the general switch in the computer room:
the first way is through the "optical fiber + optical mole", that is, the general switch is connected to the optical port of the core switch through the uplink optical port, combined with the optical mole and optical fiber
the second way is through the network cable, which generally requires the core switch to have an optical multiplexer port. At this time, the general switch can directly connect with the RJ45 port on the core switch through the network cable.
the first way is through the "optical fiber + optical mole", that is, the general switch is connected to the optical port of the core switch through the uplink optical port, combined with the optical mole and optical fiber
the second way is through the network cable, which generally requires the core switch to have an optical multiplexer port. At this time, the general switch can directly connect with the RJ45 port on the core switch through the network cable.
8. What is risk? Futures contracts provide leverage (inversely proportional to the guarantee rate). The volatility of underlying assets determines the volatility of futures
it's normal for the stock market to fluctuate by 30-40% a year, and the fluctuation of exchange rate by more than 20% is very large. However, if the leverage ratio is included, the profit and loss fluctuation of foreign exchange futures may be much higher than that of stock market futures, but these are just numbers games< In the end, derivatives only provide a mathematical calculation.
it's normal for the stock market to fluctuate by 30-40% a year, and the fluctuation of exchange rate by more than 20% is very large. However, if the leverage ratio is included, the profit and loss fluctuation of foreign exchange futures may be much higher than that of stock market futures, but these are just numbers games< In the end, derivatives only provide a mathematical calculation.
9. Distributed storage system is to store data in multiple independent devices. Traditional network storage system uses centralized storage server to store all data. Storage server becomes the bottleneck of system performance and the focus of reliability and security, which can not meet the needs of large-scale storage applications. The distributed network storage system adopts an extensible system structure, uses multiple storage servers to share the storage load, and uses location server to locate the storage information. It not only improves the reliability, availability and access efficiency of the system, but also is easy to expand
distributed and centralized storage
the advantages and disadvantages of centralized storage are that the physical media are centralized; Uploading video stream to the center requires high environment of the computer room, large space of the computer room, load bearing, air conditioning and so on
the advantages and disadvantages of distributed storage and centralized management are that the physical media are distributed to different geographical locations; There is no requirement for the bandwidth of the backbone network when the video stream is uploaded nearby; Multiple low-end and small capacity storage devices can be deployed in a distributed way, with lower equipment price and maintenance cost; The small capacity equipment is distributed and deployed, and the requirements for the computer room environment are low<
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.
distributed and centralized storage
the advantages and disadvantages of centralized storage are that the physical media are centralized; Uploading video stream to the center requires high environment of the computer room, large space of the computer room, load bearing, air conditioning and so on
the advantages and disadvantages of distributed storage and centralized management are that the physical media are distributed to different geographical locations; There is no requirement for the bandwidth of the backbone network when the video stream is uploaded nearby; Multiple low-end and small capacity storage devices can be deployed in a distributed way, with lower equipment price and maintenance cost; The small capacity equipment is distributed and deployed, and the requirements for the computer room environment are low<
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.
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