What are the advantages of golang?

Golang’s advantages: 1. Easy learning curve; 2. High development efficiency and operating efficiency; 3. Free and efficient; 4. Powerful standard library; 5. Easy deployment; 6. Simple concurrency; 7. Good stability. The syntax of Go language is simple and straightforward, the learning curve is very low, and it is very fast to get started. Go has a large number of built-in libraries and tool chains, which can make team development convenient and efficient. Go has powerful compilation checks, strict coding standards and complete software life cycle tools. It has strong stability, and stability trumps everything.

The operating environment of this tutorial: Windows 7 system, GO version 1.18, Dell G3 computer.

golang (go) is a procedural programming language that can be used for fast machine code compilation. It is a statically typed compiled language. It provides a concurrency mechanism that makes it easy to develop multi-core and networked machine-level programs. It is a fast, dynamically typed and interpreted language; it provides support for interfaces and type embedding.

Features of golang

• Simple syntax

  Go language is simple and easy to learn, with a gentle learning curve. There is no need for two to three years of learning like C/C language. Go language is called "C language of the Internet era". The style of Go language is similar to C language. Its syntax has been greatly simplified based on the C language, and unnecessary expression brackets have been removed. The loop has only one expression method, for, which can realize various traversals such as numerical values ​​and key values.

• Uniform code style

  Go language provides a set of formatting tools-go fmt. Some Go language development environments or editors will use formatting tools to modify the format of the code when saving, thus ensuring that the code submitted by different developers is in a unified format.

• Good execution performance

  Go language is a compiled language. The code we write is directly compiled into a binary executable file that can be executed by the server.

• High development efficiency

  Although Go language is a compiled language, it has a built-in garbage collection mechanism, which reduces the mental burden on developers and makes it more efficient. It has the same development efficiency as interpreted languages ​​​​such as Python and PHP. It truly achieves the perfect combination of development efficiency and execution efficiency.

• Born to support concurrency

  Go was released in 2009, when multi-core processors were already on the market. The Go language has native design advantages in multi-core concurrency. The Go language natively supports concurrency from the bottom up, without the need for third-party libraries, developers' programming skills and development experience.

Advantages of golang

1. Easy learning curve

Go language syntax is simple and contains C-like syntax. Because the Go language is easy to learn, an ordinary college student can write a usable, high-performance application in a few weeks. Everyone in China pursues speed, which is one of the reasons why Go is so popular in China.

The grammatical features of the Go language are simply too simple. It is so simple that you can hardly do any tricks. It is straightforward, the learning curve is very low, and you can get started very quickly.

2. Efficiency: fast compilation time, high development efficiency and running efficiency

Compared with the sluggish compilation speed of Java and C during the development process, Go’s fast Compilation time is a major efficiency advantage. Go has operating efficiency close to C and development efficiency close to PHP.

The concept of the C language is to trust programmers, keep the language small, not shield the bottom layer and be friendly to the bottom layer, and pay attention to the execution efficiency and performance of the language. Python's attitude is to accomplish as much as possible with as little code as possible. So I can feel that the Go language wants to unify C and Python, which is a great thing.

3. Free and efficient: combination of ideas, non-intrusive interfaces

Go language can be said to be the perfect fusion of development efficiency and operating efficiency, a natural combination Concurrent programming support. Go language supports all current programming paradigms, including procedural programming, object-oriented programming, interface-oriented programming, and functional programming. Programmers can get what they need, combine them freely, and play whatever they want.

4. Powerful standard library

Go has a large number of built-in libraries, especially the network library which is very powerful. There are powerful built-in tools. There are many tool chains built into the Go language. The best one should be the gofmt tool, which automatically formats the code and makes team review so simple. The code format is exactly the same, and it is difficult to think of something different.

5. Convenient deployment: binary files, Copy deployment

This is the biggest reason why many people choose Go, because deployment is so convenient, so many people now Use Go to develop operation and maintenance programs.

6. Simple concurrency

Parallel and asynchronous programming are almost painless. The two artifacts of Go language, Goroutine and Channel, are simply huge blessings for concurrent and asynchronous programming. The concurrency and asynchronous methods of languages ​​​​such as C, C, Java, Python and JavaScript are too complex to control and prone to errors, and Go solves this problem very elegantly and smoothly. For programmers who have suffered from concurrency and asynchronous programming for many years, this is a completely eye-catching feeling.

Go is a very efficient language with high support for concurrency. Go is a programming language developed for big data, microservices, and concurrency.

Go as a language strives to make things simple. It doesn't introduce many new concepts, but focuses on creating a simple language that is incredibly fast and easy to use. Its only innovations are goroutines and channels. Goroutines are Go's lightweight thread-oriented approach, and channels are the preferred way of communicating between goroutines.

The cost of creating Goroutines is very low, requiring only a few thousand bytes of additional memory. Because of this, it is possible to run hundreds or even thousands of goroutines simultaneously. Communication between goroutines can be achieved with the help of channels. Goroutines and the channel-based concurrency approach make it very easy to use all available CPU cores and handle concurrent IO. Compared to Python/Java, running a function on a goroutine requires minimal code.

7. Stability

Go has powerful compilation checks, strict coding standards and complete software life cycle tools. It has strong stability and overwhelming stability. everything. So why is Go more stable than other programs? This is because Go provides tools for each aspect of the software life cycle (development, testing, deployment, maintenance, etc.), such as go tool, gofmt, go test.

8. Cross-platform compilation

If the Go code you write does not contain cgo, then you can compile Linux applications on the window system. How to do it? ? Go references the code of plan9, which is information that does not depend on the system.

What is Go suitable for?

• Server programming, those things you used to do if you used C or C , Go is very suitable for processing logs, data packaging, virtual machine processing, file systems, etc.

• Distributed systems, database agents, etc.

• Network programming, this area is currently the most widely used, including Web applications, API applications, downloads Application,

• in-memory database, groupcache developed by Google some time ago, and part of couchbase constitute the

• cloud platform. Currently, many foreign cloud platforms are in It is developed using Go and is partly built by CloudFoundy. The former technical director of VMare came up with the apcera cloud platform himself.

Go successful project

nsq: bitly open source message queue system, the performance is very high, currently they work every day Process billions of messages

docker: a virtual packaging tool based on lxc, which can realize the establishment of PAAS platform.

packer: used to generate image files for different platforms, such as VM, vbox, AWS, etc. The author is the author of vagrant

skynet: distributed scheduling framework

Doozer: Distributed synchronization tool, similar to ZooKeeper

Heka: mazila open source log processing system

cbfs: couchbase open source distributed file system

tsuru: open source PAAS platform, and The functions implemented by SAE are exactly the same

groupcache: a caching system written by the author of memcahe for the Google download system

god: a caching system similar to redis, but supports distribution and scalability

gor: Network traffic packet capture and replay tool

[Related recommendations: Go video tutorial]

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