Widespread use of Go language: who are these companies?

In today’s Internet era, software development has become one of the essential skills in all walks of life. As an efficient, flexible and concise programming language, Go language is used more and more widely. Many well-known companies are using Go language to develop their products and services. Let's take a look at these companies and specific cases of how they apply Go language.

1. Google (Google)
   As one of the inventors of the Go language, Google is naturally a heavy user of the Go language. Google has widely used the Go language in many projects, such as its network server software Borg and Kubernetes, distributed database CockroachDB, etc. The following is a simple Go language example that shows how to write a simple HTTP server using Go:

package main

import (
    "fmt"
    "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello, World!")
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

2. Amazon (Amazon)
   Amazon is one of the largest e-commerce companies in the world One, it is also using Go language on a large scale to develop their services. For example, Amazon's cloud computing platform AWS has many services written in Go language, such as AWS Lambda, Amazon Elastic Container Service, etc. The following is a simple Go language example that shows how to write an AWS Lambda function using Go:

package main

import (
    "context"

    "github.com/aws/aws-lambda-go/lambda"
)

func handler(ctx context.Context) (string, error) {
    return "Hello, World!", nil
}

func main() {
    lambda.Start(handler)
}

3. Facebook
   As one of the world's largest social network platforms, Facebook is also Go language is used in some projects. For example, Facebook's storage system RocksDB is written in Go language. The concurrency features of Go language make RocksDB perform well in high concurrency situations. The following is a simple Go language example that shows how to use Go to write a simple concurrent program:

package main

import (
    "fmt"
    "sync"
)

func main() {
    var wg sync.WaitGroup
    wg.Add(2)

    go func() {
        defer wg.Done()
        fmt.Println("Goroutine 1")
    }()

    go func() {
        defer wg.Done()
        fmt.Println("Goroutine 2")
    }()

    wg.Wait()
    fmt.Println("All Goroutines finished.")
}

4. Dropbox
   As a well-known cloud storage service provider, Dropbox is also Use Go language to develop their services. Dropbox has developed some internal tools and services using the Go language to improve the performance and reliability of the system. The following is a simple Go language example that shows how to use Go to write a simple file upload service:

package main

import (
    "fmt"
    "log"
    "net/http"
)

func uploadHandler(w http.ResponseWriter, r *http.Request) {
    r.ParseMultipartForm(10 << 20) // 10MB max

    file, handler, err := r.FormFile("file")
    if err != nil {
        log.Println("Error retrieving file")
        return
    }
    defer file.Close()

    fmt.Fprintf(w, "Uploaded file: %+v
", handler.Filename)
}

func main() {
    http.HandleFunc("/upload", uploadHandler)
    http.ListenAndServe(":8080", nil)
}

Summary:
The above introduces some well-known companies such as Google, Amazon, Facebook and Dropbox uses Go language to develop products and services, and also shows some simple Go language code examples. It can be seen that the Go language has been widely used in all walks of life because of its efficient, flexible and concise features, bringing great convenience and efficiency improvement to software development. I believe that as the Go language continues to develop and grow, it will have a wider range of application scenarios and more well-known companies will join it in the future.

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