Development of DAPP in Ethereum
Publish: 2021-05-20 22:47:37
1. Ethereum is a new and open blockchain platform, which allows anyone to build and use decentralized applications running through blockchain technology in the platform
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.
2. Go full stack + blockchain course:
a total of 22 weeks, divided into five stages,
the first stage is 4 weeks, go language foundation and network concurrency, learning the introctory go language,
the second stage is 4 weeks, go language practical web development, crawler development, cryptography, consensus algorithm, realizing lightweight public chain, learning the website and crawler that can develop golang, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, As well as DAPP development of smart contract
phase 5, 6-week project practice, five enterprise level projects, and one year of blockchain project experience after learning
from the characteristics of the language itself, go is a very efficient language, which highly supports concurrency. Go language itself pays more attention to distributed system, and concurrency processing is relatively good, such as advertising and search, That kind of high concurrency server
go language advantages:
excellent performance, can be directly compiled into machine code, does not rely on other libraries, go is extremely fast. Its performance is similar to Java or C + +
concurrency is supported at the language level, which is the biggest feature of go. It is born to support concurrency, and go is the concurrency supported in gene, which can make full use of multi-core and make it easy to use concurrency
the built-in runtime supports garbage collection, which is one of the features of dynamic language. Although GC is not perfect at present, it is enough to cope with most of the situations we can encounter, especially GC after go1.1
it's easy to learn. The authors of go language all have the gene of C, so go naturally has the gene of C. There are 25 go keywords, but the expressive ability is very strong. It almost supports most of the features you've seen in other languages: inheritance, overloading, object, etc
rich standard libraries, go has built a large number of libraries, especially the network library, which is also my favorite part< As like as two peas, br / > built-in powerful tools, Go language is built with many tools chain, the best should be gofmt tools, automatic formatting code, make team review become so simple, code format is exactly the same, it is very difficult to think differently.
cross platform compilation and fast compilation. Compared with the sluggish compilation speed of Java and C + +, the fast compilation time of go is a major efficiency advantage
disadvantages of go language:
package management: package management of go language is absolutely not perfect. By default, it has no way to make a specific version of the dependency library, nor can it create replicable builds. In contrast, python, node and Ruby all have better package management systems. However, with the right tools, the package management of go language can also perform well
lack of development framework: go language does not have a major framework, such as Ruby's rails framework, Python's Django framework or PHP's laravel. This is a heated discussion in the go language community, because many people think that we should not start with using frameworks. This is true in many cases, but if you just want to build a simple crud API, it's much easier to use Django / djrf, rails laravel, or Phoenix
exception handling: go language can help developers deal with compilation errors by simply returning errors (or call stack) through functions and expected calling codes. Although this method is effective, it is easy to lose the scope of the error, so it is difficult to provide meaningful error information to users. Error package can solve this problem by allowing us to add context and stack trace to return error
another problem is that we may forget to handle errors. Static analysis tools such as errcheck and megacheck can avoid these errors. Although these solutions are very effective, they may not be the right way.
a total of 22 weeks, divided into five stages,
the first stage is 4 weeks, go language foundation and network concurrency, learning the introctory go language,
the second stage is 4 weeks, go language practical web development, crawler development, cryptography, consensus algorithm, realizing lightweight public chain, learning the website and crawler that can develop golang, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, As well as DAPP development of smart contract
phase 5, 6-week project practice, five enterprise level projects, and one year of blockchain project experience after learning
from the characteristics of the language itself, go is a very efficient language, which highly supports concurrency. Go language itself pays more attention to distributed system, and concurrency processing is relatively good, such as advertising and search, That kind of high concurrency server
go language advantages:
excellent performance, can be directly compiled into machine code, does not rely on other libraries, go is extremely fast. Its performance is similar to Java or C + +
concurrency is supported at the language level, which is the biggest feature of go. It is born to support concurrency, and go is the concurrency supported in gene, which can make full use of multi-core and make it easy to use concurrency
the built-in runtime supports garbage collection, which is one of the features of dynamic language. Although GC is not perfect at present, it is enough to cope with most of the situations we can encounter, especially GC after go1.1
it's easy to learn. The authors of go language all have the gene of C, so go naturally has the gene of C. There are 25 go keywords, but the expressive ability is very strong. It almost supports most of the features you've seen in other languages: inheritance, overloading, object, etc
rich standard libraries, go has built a large number of libraries, especially the network library, which is also my favorite part< As like as two peas, br / > built-in powerful tools, Go language is built with many tools chain, the best should be gofmt tools, automatic formatting code, make team review become so simple, code format is exactly the same, it is very difficult to think differently.
cross platform compilation and fast compilation. Compared with the sluggish compilation speed of Java and C + +, the fast compilation time of go is a major efficiency advantage
disadvantages of go language:
package management: package management of go language is absolutely not perfect. By default, it has no way to make a specific version of the dependency library, nor can it create replicable builds. In contrast, python, node and Ruby all have better package management systems. However, with the right tools, the package management of go language can also perform well
lack of development framework: go language does not have a major framework, such as Ruby's rails framework, Python's Django framework or PHP's laravel. This is a heated discussion in the go language community, because many people think that we should not start with using frameworks. This is true in many cases, but if you just want to build a simple crud API, it's much easier to use Django / djrf, rails laravel, or Phoenix
exception handling: go language can help developers deal with compilation errors by simply returning errors (or call stack) through functions and expected calling codes. Although this method is effective, it is easy to lose the scope of the error, so it is difficult to provide meaningful error information to users. Error package can solve this problem by allowing us to add context and stack trace to return error
another problem is that we may forget to handle errors. Static analysis tools such as errcheck and megacheck can avoid these errors. Although these solutions are very effective, they may not be the right way.
3.
Ethereum is an implementation of blockchain. In Ethereum network, many nodes are connected with each other to form Ethereum network:
Ethereum node software provides two core functions: data storage and contract code execution
in each Ethereum node, complete blockchain data is stored. Ethereum not only saves the transaction data on the chain, but also saves the compiled contract code on the chain
At the same time, a virtual machine is provided to execute the contract code Ethereum virtual machine
Ethereum blockchain not only stores data and code, but also contains a virtual machine (EVM) in each node to execute contract code - it sounds like a computer operating system
in fact, this is the core difference between Ethereum and bitcoin: the existence of virtual machine has brought blockchain into the era of 2.0 and made blockchain a friendly platform for application developers for the first time
the above content comes from the introction course of Ethereum DAPP development
4. How many weeks is the go full stack + blockchain course? How many stages? How long does each stage last? What is the degree of completion of each stage<
22 weeks in total, divided into five stages,
the first stage is four weeks, go language foundation and network concurrency, after learning the introctory go language,
the second stage is four weeks, go language practical web development, crawler development, cryptography, consensus algorithm, implementation of lightweight public chain, after learning the website and crawler that can develop golang, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, And the intelligent contract DAPP development
phase V 6-week project actual combat, five enterprise level projects, after learning, you can have one year of blockchain project experience
suitable for the crowd:
1. People who have no programming foundation and want to learn it technology
2
3. People who have programming experience and want to change careers
learning objectives:
learn go language from 0, and comprehensively cultivate special application-oriented talents of blockchain through the learning of go language< Employment direction:
1. New technology go language development (web development, micro service, distributed)
2. Blockchain development in new areas (cryptography security, blockchain system, blockchain application).
22 weeks in total, divided into five stages,
the first stage is four weeks, go language foundation and network concurrency, after learning the introctory go language,
the second stage is four weeks, go language practical web development, crawler development, cryptography, consensus algorithm, implementation of lightweight public chain, after learning the website and crawler that can develop golang, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, And the intelligent contract DAPP development
phase V 6-week project actual combat, five enterprise level projects, after learning, you can have one year of blockchain project experience
suitable for the crowd:
1. People who have no programming foundation and want to learn it technology
2
3. People who have programming experience and want to change careers
learning objectives:
learn go language from 0, and comprehensively cultivate special application-oriented talents of blockchain through the learning of go language< Employment direction:
1. New technology go language development (web development, micro service, distributed)
2. Blockchain development in new areas (cryptography security, blockchain system, blockchain application).
5. Blockchain 2.0 is to write human's unified language, economic behavior, social system and even life as a basic software protocol. Unified language unifies the natural languages of different nationalities into a low entropy expression form and provides its interface with computer language; Human economic behavior, social system and life regeneration mechanism are collectively referred to as time monetary system. Blockchain 2.0 is a distributed artificial intelligence operating system integrating unified language and time currency<
go full stack + blockchain course:
a total of 22 weeks, divided into five stages,
the first stage is four weeks, go language foundation and network concurrency, learning the introctory go language,
the second stage is four weeks, go language practical web development, crawler development, cryptography, consensus algorithm, realizing lightweight public chain, learning the website of golang, crawler, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, And the intelligent contract DAPP development
phase V 6-week project actual combat, 5 enterprise level projects, after learning, you can have 1 year of blockchain project experience
go full stack + blockchain course:
a total of 22 weeks, divided into five stages,
the first stage is four weeks, go language foundation and network concurrency, learning the introctory go language,
the second stage is four weeks, go language practical web development, crawler development, cryptography, consensus algorithm, realizing lightweight public chain, learning the website of golang, crawler, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, And the intelligent contract DAPP development
phase V 6-week project actual combat, 5 enterprise level projects, after learning, you can have 1 year of blockchain project experience
6. Compared with 9 million Java developers and 18.5 million software developers in the world, blockchain developers are pale. In essence, blockchain is no more difficult than any other kind of development. Developers only need to know how to use encryption protocol. You know, a primary school in a remote area of Australia has set up a "blockchain school" project to enable students to deeply learn blockchain technology, and has created their own cryptocurrency. In addition, a group of fourth graders want to be their own ICO. Of course, it is not that no one has done so now. For example, there are many blockchain training institutions in Beijing that are known as "three days and two nights zero basic package society"... Of course, there are also those who really implement it. As a professional comprehensive information and research service platform in the vertical field of blockchain, the blockchain Application Research Institute established by fire coin integrates instry consulting, research, ecation and training services. It is hoped that in the future, more organizations will be able to guide and practice software developers who want to enter the blockchain field.
7. DAPP has been highly expected since its birth. Relying on Ethereum, EOS and other public chain platforms, many development teams have released a large number of dapps. However, on the whole, DAPP is in its early stage, and its development is still in a dilemma. It has been five years since Ethereum published its white paper in 2013, and the number of dapps has reached more than 1000. On the new generation of public chain represented by EOS, the number of dapps is still rare
these dapps generally have many problems, such as less daily active users, weak foundation and so on. But in the instry, it is generally expected. Compared with the development process of app, instry insiders said that DAPP still needs to overcome several difficulties in the future, such as stable and efficient public chain, developer ecology and user threshold. DAPP is now regarded as an important way to promote blockchain to ordinary people. It is not realistic to replace app with the current development speed of DAPP
however, if DAPP gives full play to its advantages in some areas, it will still pose a certain threat to app, which also depends on the development of blockchain. Dappdiscovery is also based on the present, starting a series of DAPP reports, DAPP market analysis, and the most fun DAPP game evaluation, trying to bring interesting and informative content sharing to all users.
these dapps generally have many problems, such as less daily active users, weak foundation and so on. But in the instry, it is generally expected. Compared with the development process of app, instry insiders said that DAPP still needs to overcome several difficulties in the future, such as stable and efficient public chain, developer ecology and user threshold. DAPP is now regarded as an important way to promote blockchain to ordinary people. It is not realistic to replace app with the current development speed of DAPP
however, if DAPP gives full play to its advantages in some areas, it will still pose a certain threat to app, which also depends on the development of blockchain. Dappdiscovery is also based on the present, starting a series of DAPP reports, DAPP market analysis, and the most fun DAPP game evaluation, trying to bring interesting and informative content sharing to all users.
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