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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.
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