How to implement message queue in Goroutine?

How to implement message queue in Goroutine? Use the make function to create an unbuffered channel. Use the 7c23da1eb3b31bb29a7b0468319c406f operator to receive messages.

#How to implement message queue in Goroutine?

Introduction

Goroutines in Go are lightweight concurrency primitives that can be used to create parallel execution code. A message queue is a communication mechanism that allows Goroutines to send and receive messages asynchronously. This tutorial will introduce how to use channels to implement message queues in Go, and provide a practical case.

Implementing message queue

Channel in Go is a two-way communication pipe that can be used to transfer values ​​between Goroutines. To create a channel, you can use the make function. For example:

ch := make(chan int)

This code creates an unbuffered channel, which means it can only hold one value at a time.

Send a message

To send a message, use the channel's 619b83ed306bd92a426cc7462ec70cb6 operator. For example:

msg := <-ch

This code will receive a value from the channel and store it in the msg variable.

Practical Case

Let us create a simple producer-consumer application, in which the producer Goroutine will send messages, and the consumer Goroutine will receive and process them these messages.

Producer code

package main

import "time"

func main() {
    ch := make(chan int)
    go func() {
        for i := 0; i < 10; i++ {
            ch <- i
            time.Sleep(time.Second)
        }
        close(ch)
    }()
}

Consumer code

package main

import "time"

func main() {
    ch := make(chan int)
    go func() {
        for {
            msg, ok := <-ch
            if !ok {
                break
            }
            time.Sleep(time.Second)
            println(msg)
        }
    }()
}

In this example, the producer sends one message every second into the channel, and the consumer will receive and process these messages from the channel at the same frequency.

The above is the detailed content of How to implement message queue in Goroutine?. For more information, please follow other related articles on the PHP Chinese website!