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A. "Node.js Blockchain Development" pdf download and read online, please ask for Baidu network disk cloud resources
"Node.js Blockchain Development" (Zhu Zhiwen ) E-book network disk download for free online reading
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Extraction code: z0rzBook title: Node .js blockchain development
Author: Zhu Zhiwen
Douban score: 4.8
Publisher: Machinery Industry Press
Published Year: 2017-5
Content introduction:
Developer. This book covers all aspects of front-end and back-end. Both front-end developers and back-end developers can learn and refer to it.
Architect. Blockchain itself is a model of distributed and cloud computing. This book describes the architectural design of a blockchain product in detail. Through this book, they can learn and master how blockchain builds complex adaptive systems based on P2P networks. .
College students, teachers, scientific researchers, etc. In the process of sharing the content of this book on the Internet, university teachers have already used it as teaching reference in actual teaching. From concept to code implementation, this book closely integrates theory and practice, explains the profound things in simple terms, and is suitable for systematic research and learning of blockchain technology.
Readers who learn Node.js. This book introduces the introductory knowledge of Node.js, including the technical principles and usage skills of Node.js. It is a complete Node.js use case. Junior and intermediate readers with a certain JavaScript foundation can learn and improve more deeply through this book. Use Node.js coding skills.
B. Introduction to blockchain technology, which programming languages are involved
Go language
Go language (Golang) is Google’s 2009 A new programming language introduced in 2019 that reduces code complexity without sacrificing application performance. Rob Pike, chief software engineer at Google, said: "We developed Go because the difficulty of software development over the past 10 years or so has been frustrating."
In addition to Bitcoin being developed in C++, At present, the clients of most mainstream workshops are developed with Go language, which is enough to show the status of Go language in the entire blockchain industry.
C++
C++ further expands and improves the C language and is an object-oriented programming language. C++ runs on a variety of platforms, such as Windows, MAC operating systems, and various versions of UNIX. C++ is a very widely used computer programming language. It is a general programming language that supports multiple programming patterns, such as procedural programming, data abstraction, object-oriented programming, generic programming, and design patterns.
Most blockchain companiesMany industries choose to use C++ to write the bottom layer of the blockchain. The most famous ones are Bitcoin, Ripple, etc., which mainly reflect strong computation.
Java
Java is different from general compiled languages or interpreted languages. It first compiles the source code into bytecode, and then relies on virtual machines on various platforms to interpret and execute the bytecode, thereby achieving the cross-platform feature of "write once, run anywhere". The development of blockchain projects has obvious dependence on Java.
Others include Python, system architecture, Ethereum, Linux, hyperledger, JavaScript, etc. will be covered.
C. How to add tokens to the account created by nodejs
Install Node.js. For the installation files and specific installation methods for each platform, please see https://nodejs.org/zh -cn/download/. Since the development tool truffle we will use later and the local test blockchain ganache are both developed based on javascript
Install truffle. As advertised on its website, truffle is the Swiss Army Knife of smart contract development. Just like maven greatly simplifies the compilation and deployment of Java programs, truffle also makes the development and deployment of smart contracts more fool-proof. (npm install -g truffle)
3. Install ganache. ganache is a blockchain local node tool customized for developing smart contracts. You can download the installation package for the corresponding platform from http://truffleframework.com/ganache/ and install it. Compared with Ethereum's original node software (geth, parity), it has the following advantages:
It is easy to install, eliminating tedious configuration and can be completed with a few clicks of the mouse.
Save system resources, it will not mine endlessly, it will only package when there are transactions that need to be packaged.
There is a graphical interface, from which you can conveniently and intuitively view block, transaction, account and other information.
4. Start ganache. After ganache is started, the interface is as follows:
D. What is the model architecture of the blockchain?
There are currently a wide range of blockchain training courses on the market. It is large, and the course contents and teaching formats are also diverse.
Blockchain
1. Introduction to programming basics
Computer software and hardware basics, character sets and character encodings, HTMLCSS (including HTML5CSS3), ECMABOMDOM, 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), Bitmin Horacoin source code analysis
4. Blockchain 2.0 - Ethereum
Ethereum working principle and infrastructure, Ethereum basics Concepts (account, transaction, Gas), Ethereum wallet Mist and Metamask, Ethereum transactions, ERC20 standard Token development and deployment, Ethereum development IDE with bridge - remix-ide, smart contracts and Solidity, Solidity deployment, backup and call , Framework technology: truffle and web3, DApp development practice, Geth
5, Blockchain 3.0 - Fabric of Hyperledger
Introduction to the Hyperledger project, Fabric deployment and use. , Fabric configuration management, Fabric architecture design, Fabric CA application and configuration, application development practice.
E. What you need to learn for front-end development and how to learn it
To learn front-end development, HTML, CSS and JavaScript are indispensable. HTML, as the core of web pages, is the key to making web pages. The standard language of web pages, CSS is used to beautify the page, and JavaScript solves the server-side language. In addition, you also need to learn the basic knowledge of website performance optimization, SEO, and server-side. Front-end learning and development recommends Guangdong embedded IT training. Click 0 yuan to get a trial course on front-end development
Technologies that need to be learned for front-end development:
1. Master basic web front-end development technologies: HTML, CSS, JavaScript, DOM, BOM, AJAX, etc., and understand them Compatibility on different browsers, rendering principles and existing bugs
2. Must master the basic knowledge of website performance optimization, SEO and server-side development technology
3. Must learn to use various web front-end development and testing Tools for assisted development
4. In addition to mastering technical knowledge, you must also master theoretical knowledge, including code maintainability, ease of use of components, hierarchical semantic templates and browser hierarchical support, etc.
5. In the future, web front-end development engineers will also study HTML5, web visual design, website color matching, website interaction design mode and other related technologies
If you want to know more about front-end development, it is recommended to consult Guangdong Embedded IT Training . GuangdongEmbedded's current technology research and development directions are new technologies such as embedded, Internet of Things, smart manufacturing, blockchain, big data, cloud computing, artificial intelligence, network security, e-commerce, etc. It is highly professional and provides comprehensive IT technical services and services to the industry. products to provide the country with more high-tech talents!
F. The conversion of Ethereum to POS will have an impact on mining
If it is completely converted to POS, mining will be GG and new products will be generated. The currency is no longer about contributing computing power to compete for accounting rights, it has completely become a dividend for holding eth!
G. Why do I say that blockchain technology will change the future of social e-commerce?
Why do I say that blockchain technology will change the future of social e-commerce?
1. What problems does blockchain technology solve?
“People often ask me recently, everyone knows that blockchain makes money, but can you tell me in one sentence, blockchain What problem does this technology solve?”
Although many people know that blockchain technology supports the operation of Bitcoin, when it comes to what problem it really solves, or what blockchain has created What is the value? Many people in the industry are speechless. Because of the ultra-high money-making effect, everyone cannot calmly look at this industry or even this so-called ecology from an investment or technical perspective.
Recently, when I interviewed some "old people in the currency circle", I got a better answer.
“Blockchain technology is the first time in human history that the problem of trust between people has been solved through technical means.”
Through the characteristics of blockchain, we It can be completely tamper-proof, traceable, transactions through smart contracts, etc. Therefore, in theory, everything that needs to solve the problem of trust between people through technical means will most likely require blockchain technology for development and innovation.
2. The Internet era gave birth to social networking and e-commerce
The Internet is a problem in which humans have greatly optimized information transmission through technical means. In the Internet era, business models are roughly divided into three major modules: advertising, e-commerce, and games. Therefore, in the Internet era, there is no doubt about the rise of e-commerce and social networking.
Taking the current highly competitive e-commerce industry as an example, Alibaba and JD.com are both leaders in the field of e-commerce. The e-commerce industry in mainland China has realized e-commerce in the Internet wave. 17 years of explosive development in the business field. WeChat, the largest social software in China and the second largest in the world, has also become an industry leader.
The current Internet industry has gone through the baptism of time, and an obvious oligarchic effect has been formed after the great waves. Today, every oligarch in the e-commerce market has become an industry heavyweight. Of course, there are also situations where it is difficult for a large ship to turn around. In this state. All e-commerce companies are looking for new directions to break through. And many people are eyeing the social e-commerce field of cross-border cooperation.
The two major representatives of social e-commerce are e-commerce based on the Weibo and WeChat ecosystems. Currently, the total market share of social e-commerce isThe ratio has reached as high as 14%-20%
Although many people say that the biggest application of blockchain is in currency speculation, the launch of projects such as SEC heralds the blockchain Technology has the potential to improve the current status of the industry. It is precisely because there are many teams like the SEC that find the integration point between technology and industry and solve the key problems of the industry, which will be the research direction and consensus of the overall blockchain in the future.
