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This article mainly explains "what are the ways to use GO language", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn "what are the ways to use GO language"!

Maintainable code in long-term projects

Go language is simple. And every time you come back to the code after a cessation, it doesn't have as many quirks to waste your time on. In addition, it requires very little learning, because its syntax is relatively popular, developers have a very smooth learning curve, such characteristics are very attractive to developers. This also results in a very low probability of bugs being facilitated. So the whole development process seems so simple and fast.

In general, the more code you have, the harder your project is to maintain. A blockchain system requires thousands of lines of code, so we need a language to make maintenance easy.

Easy to become a Go master

We started with 20 brilliant engineers, mostly from JavaScript, Java, and Python, but also systems engineers who were good at C.

We naturally need the same language to work together. Convince them to learn Go is easy, but getting them to become Go engineers in a month is pretty easy. I'm not sure if other languages are as fast.

speed and efficiency

Unlike Python, Go is not an interpreted language-it is compiled. This drastically reduces bugs that pop up during runtime. It's a bit like C, where code is compiled first, errors appear at compile time and are handled before it can run; however, it's more advanced than C and more productive than JavaScript and Python.

A blockchain needs to be highly efficient, given that it uses cryptographic algorithms, given that it propagates large amounts of data across the network and stores them there.

Born for distributed systems

This is evident in the tools and software built with Golang. Docker, as a microservice container, is also built with Golang.

We've seen how easily we can handle millions of requests with Golang microservices.

Goroutines

Concurrency is when several programs or parts of a program run simultaneously, or in parallel, to increase throughput. Concurrency is usually achieved through threads in Java or some other language. Go uses the "Goroutines" method. Goroutines are functions that can be executed simultaneously with other functions. A Goroutine takes about 4kb of memory, while a thread takes about 1024kb. So Goroutines is 250 times smaller than the threads used by other languages, which allows it to execute a growing number of other Goroutines simultaneously.

Here are the differences between Go and Java in terms of processing threads:

In Java, objects are shared between units of work, where a unit must first obtain its object lock in order to access the data. In Golang, work units share something called a channel, and a channel is basically a FIFO pipe-work units can initiate data reads and writes to the channel.

Go follows its code-"not to communicate by sharing memory, instead share memory by communicating."

Parallel operations have special significance for blockchains. Running a large number of functions simultaneously-This clever and natural feature allows Go programs to run flexibly on distributed systems, which is the main requirement of blockchain. However, this feature has already been discovered, Docker, MongoDB, Netflix, Uber, etc., and their product features are mainly dependent on high concurrency.

Everyone in the blockchain world uses it.

Many stable blockchain-based DApps and tools are written in Go. You can easily find a library for a function you need.

Go is compiled, so it is executed directly by the operating system. This allows us to more freely implement technologies like Ethereum Virtual Machine (EVM). If it is Java, because its own running carrier JVM is a virtual machine, to make a sandbox on it, in essence, it is a higher level of abstraction, which is completely unnecessary and will waste computer resources.

Of course, Go has a scripting-like experience and is cheap to learn, so it's perfect for small projects. QPS (The Queries per second) is much better than Java, so it is suitable for building high-volume services.

Some wonderful Go code snippets

1, this is easy to return a pointer from a function to a local variable:

2. You can define another function inside the function and use the function as the return value, where the local variables are treated as closure internal variables:

3, object-based programming:

At this point, I believe that everyone has a deeper understanding of "what are the methods of using GO language", so let's actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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