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区块链需要用到mysql吗,区块链需要用到mysql吗知乎

发布时间:2023-12-10-22:14:00 来源:网络 比特币基础 区块   mysql

区块链需要用到mysql吗,区块链需要用到mysql吗知乎

区块链是一种分布式记账技术,它利用数字签名、共识机制和密码学等技术,实现了不同参与者之间的去中心化交易,使得资产的流转变得更加安全、可信、透明。那么,区块链需要用到mysql吗?

答案是:不一定。区块链本身具有去中心化的特性,它没有必要依赖于关系数据库,也可以使用NoSQL等数据库。但是,如果要将区块链与传统的信息系统连接起来,就需要使用关系数据库,而mysql正是其中最常用的一种。

首先,mysql是一种开源的关系型数据库管理系统,它拥有出色的性能和稳定性,可以满足复杂的数据库应用需求。由于mysql的开放性,它可以与各种编程语言和框架进行集成,这也是它被广泛使用的原因之一。

其次,mysql拥有强大的数据库查询功能,可以快速检索出符合条件的数据,这对于区块链来说非常重要,因为它需要高效地检索出相关的交易数据。此外,mysql还提供了多种数据库安全控制功能,可以有效地防止数据泄露,这也是它被广泛使用的另一个原因。

总之,mysql是一种非常可靠的数据库管理系统,它的开放性、高性能和安全性使得它成为区块链应用中的首选数据库。因此,如果需要将区块链与传统信息系统连接起来,使用mysql是一个不错的选择。


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『一』 Where is blockchain technology mainly used?

From a technical point of view and an architectural point of view, I will tell you in layman’s terms what I think about blockchain technology. Some understanding of chains.

What exactly is blockchain? Block chain, in a word, blockchain is a storage system, and the storage system is more detailed. Block chain is a distributed storage system without an administrator, and each node owns all data.

What do common storage systems look like?

As shown in the picture above, the bottom is data, and data can be written above. A space stores data, a software manages the data, and provides an interface to write data. This is the storage system. For example, MySQL is the most common storage system.

What problems are common in ordinary storage systems? There are at least two common problems

The first is the problem of non-high availability, where data is dangerous if it exists in one place. In technical terms, the data is not highly available.

The second problem is that it has a single point of writing, and there is only one writing point. In technical terms, it is a single point of control.

How do ordinary storage systems usually solve these two problems?

In fact, MySQL can do a dual-master master-slave synchronization. Two nodes can write at the same time. If you want to build a multi-machine room and multi-active data center, in fact, multi-machine room and multi-active data center also requires data synchronization. What should be emphasized here is that multi-point writing often leads to consistency issues of write-write conflicts. Taking MySQl as an example, assuming that the attribute of a table is an auto-increment ID, then the data in the database is now 1234, then one of the nodes When writing, a piece of data is inserted, it may become 5, and then these 5 pieces of data are synchronized to another master node. Before the synchronization is completed, if another writing node also inserts a piece of data, it will also generate A piece of data with an auto-incrementing ID of 5 is obtained. Then, after it is generated, it is synchronized to another node, and then when the synchronized data arrives, it will conflict with the two local 5s, and the synchronization will fail, which will cause write consistency conflicts. This problem will occur if there are multiple writes.

How to ensure consistency when writing multiple points?

Weixin's "Swan Master Class" will give you more technical work

『二』What kind of technology development does blockchain require?

Blockchain requires What technology development:
1. Blockchain theory: Blockchain developers must be familiar with the theoretical knowledge of blockchain. This is the most basic requirement for a blockchain developer. The content includes blockchain network architecture, decentralization and other related application technologies. Expanding technical theory is mastery of Ethereum development.
2. Smart contract: Smart contract is a string of codes that blockchain developers need to write in blockchain programming language. It is a trust mechanism developed after imagining logic according to different scenarios.Eliminate third-party intervention and create an efficient and high-trust blockchain network. Blockchain developers need to realize automatic execution of this string of code, and the operation effect is irreversible.
3. Cryptography: Many blockchain application scenarios have high encryption, and point-to-point encryption mode is a characteristic of cryptography. By studying cryptography, blockchain developers understand encryption concepts such as wallets, keys, and a wide range of encryption and decryption technologies
4. Distributed architecture: Blockchain developers must understand the functions of distributed architecture and networks . Decentralized network is the foundation of the blockchain architecture. The transmission of information in the blockchain network must follow a decentralized approach so that everyone can enjoy the same network rights.

『三』What are the courses on blockchain technology architecture?

Currently, there are a wide range of blockchain training courses on the market, and the course content and teaching formats are also diverse.

Blockchain

1. Introduction to programming basics

Computer software and hardware basics, character sets and character encoding, HTML+CSS (including HTML5+CSS3), ECMA + BOM + DOM, jQuery, node.js, Ajax and Express

2. Go programming language

Go basic syntax, process control, functions and Data, error handling, Go object-oriented programming, Go concurrent programming, Go network programming, Go security programming, Go advanced programming (goroutine, channel), database MySQL, LevelDB

3, blockchain 1.0— —Bitcoin

Bitcoin principles, Bitcoin system architecture, cryptographic algorithms (implemented in Go language), consensus algorithms (implemented in Go language), Bitcoin transaction principles and transaction scripts, Bitcoin RPC programming (node .js implementation), Bitcoin source code analysis

4. Blockchain 2.0 - Ethereum

The working principle and infrastructure of Ethereum, the basic concepts of Ethereum (accounts, transactions , Gas), Ethereum wallet Mist and Metamask, Ethereum transactions, ERC20 standard Token development and deployment, Ethereum development IDE - remix-ide, smart contracts and Solidity, Solidity deployment, backup and calling, framework technology: truffle and web3, DApp development practice, Geth

5, Blockchain 3.0 - Fabric of Hyperledger

Hyperledger project introduction, Fabric deployment and use, Fabric configuration management, Fabric architecture design, Fabric CA application and configuration, application development practice.

The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the “Smart Learning Workshop 2020-Xue” launched by the School Planning and Construction Development Center of the Ministry of Education of China."Master's Innovation Workstation" is the only approved pilot workstation for "Blockchain Technology Major". The professional station provides students with diversified growth paths, promotes the reform of the professional degree research, production, learning and research integration training model, and builds an applied and compound talent training system.< /p>

『四』 What kind of disruptions does blockchain bring and why can it become a national strategy

The disruptive characteristics of blockchain lie in the following four aspects: 1. Transparency. Blockchain The data records of the chain system are transparent to the entire network nodes, and the update operations of the data records are also transparent to the entire network nodes. This is the basis for the trust of the blockchain system. Since the blockchain system uses open source programs and open rules With high participation, blockchain data records and operating rules can be reviewed and traced by nodes across the entire network, with high transparency.
2. Openness. The blockchain system is open, except for data directly related to various Each party’s private messages are always encrypted and the blockchain data is open to everyone (except for blockchain systems with special permission requirements). Anyone or participating nodes can query blockchain data records or develop related information through the public interface. application, so the entire system information is highly transparent.
3. Information cannot be tampered with. Once the information of the blockchain system is verified and added to the blockchain, it will be permanently stored and cannot be changed (those with special change requirements Except for systems such as private blockchains). Unless more than 51% of the nodes in the system can be controlled at the same time, modifications to the database on a single node are invalid, so the data stability and reliability of the blockchain are extremely high
4. Decentralization. Decentralization is the most basic feature of the blockchain, which means that the blockchain no longer relies on central processing nodes and realizes distributed recording, storage and updating of data. In traditional centralized networks , attacking a central node can destroy the entire system, but in a decentralized blockchain network, attacking a single node cannot control or destroy the entire network. Mastering more than 5% of the nodes in the network is just the beginning of gaining control. .2019 is the first year of the commercial application of blockchain technology, and favorable policy incentives will make the development of blockchain technology more stable.
As the application of blockchain technology gradually penetrates into digital finance, the Internet, etc. In many fields, everyone has a clearer understanding of the value of blockchain.
Blockchain has formed a global competition situation. All countries are seizing development opportunities, and China cannot lag behind; therefore, blockchain has become a national strategy There is nothing wrong with that.

『Wu』Quark Blockchain

1. Bitcoin 2. Ethereum: Ethereum is a digital token of Ethereum and is regarded as "Bitcoin" "Coin Version 2.0" uses a different blockchain technology from Bitcoin. "Ethereum" developers need to pay Ether (ETH) to support the operation of the application. Like other digital currencies, it can be bought and sold on the trading platform. 3 , Litecoin: Litecoin (abbreviation: LTC, currency symbol: ?) is an online currency based on "peer-to-peer technology, and also MIAn open source software project under the T/X11 license. It helps users make instant payments to anyone in the world. 4. Dogecoin: Dogecoin, some people call it "Dogecoin/Dogecoin", was born on December 8, 2013. Based on the Scrypt algorithm, it is the second largest virtual currency in the world after Bitcoin in terms of number of users. 5. Yuanbao Coin: Yuanbao Coin is a virtual digital currency similar to Bitcoin. The founders of Yuanbao Coin are a group of Bitcoin enthusiasts and earliest supporters. However, after seeing the problems of Bitcoin, they decided to do their best to use the latest technology to develop an electronic currency suitable for Chinese people. . 6. Peercoin: "PPCoin was pre-released by Sunny King on August 11, 2012, and officially released on August 19. The biggest innovation of PPCoin is that its mining method mixes PoW workload proof and PoS equity proof methods. PoS mining method Only ordinary computers and clients are needed to process transactions and maintain network security, achieving energy saving and security purposes. 7. Kate Coin: Kate Coin (KTC), referred to as KTC, is a virtual P2P digital currency that can be used globally. .Peer-to-peer transmission means a decentralized payment system. 8. Quarkcoin: Quarkcoin is a virtual super-secure hash operation based on 6 encryption algorithms (blake, bmw, groestl, jh, keccak, skein) and 9 rounds of operations. Currency, 3-round application of random hash function, has unique technical specifications. 9. Infinite Coin: Infinite Coin (IFC for short) is an emerging digital currency, which has more circulation advantages than Bitcoin and fills the gap of Bitcoin in commercial circulation. , shortcomings in promoting commercial operations and other fields. 10. Popular currency: Popular currency, the English name is PopulaceCoin, or POC for short, was born on March 7, 2014. The total amount of POC is similar to the world's population (total 7.057 billion).

『Lu』 What courses do you need to learn in blockchain

The courses you need to learn in blockchain are: 1.Khan Academy; 2.Udemy; 3. Lynda; 4.Coursera; 5. PluralSight, etc. In addition, to learn blockchain, you must also know the relationship between blockchain and programming languages. It is recommended to learn blockchain development based on Go language and Java, and Go language is slightly less difficult to learn than Java.

『撒』 Is mysql’s master-slave replication related to the blockchain?

The most obvious and essential difference is the difference between data-sharing and nothing-sharing .

The cluster is shared storage. There is no sharing in replication. Each machine is an independent and complete system.

Thus, what is brought about is application and implementation Technical differences.

『8』 What is the data block of data blockchain?What are the chains?

1. Data blockchain is a term in the field of information technology. In essence, it is a shared database, and the data or information stored in it has the characteristics of "unforgeable", "full traces left", "traceable", "open and transparent" and "collectively maintained". Based on these characteristics, blockchain technology has laid a solid foundation of "trust" and created a reliable "cooperation" mechanism, which has broad application prospects.

2. The current mainstream data storage technologies include network databases, tree databases, relational databases, etc. Among them, the widely used relational databases include oracle, DB2, and mysql.

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