How do I implement backpressure with channels in Go?

Backpressure is a crucial aspect of handling concurrency in Go, especially when using channels. It helps to manage the flow of data between goroutines, ensuring that a faster producer does not overwhelm a slower consumer. By implementing backpressure, you can control the rate at which data is sent through channels, making your applications more efficient and preventing resource exhaustion.

In Go, you can implement backpressure using buffered channels or by using a signaling mechanism to control the flow of data. Here’s an example of how to use a buffered channel to apply backpressure:


        package main
        
        import (
            "fmt"
            "time"
        )

        func main() {
            // Create a buffered channel with a capacity of 5
            ch := make(chan int, 5)

            // Producer
            go func() {
                for i := 0; i < 20; i++ {
                    ch <- i // This will block if the buffer is full
                    fmt.Println("Produced:", i)
                    time.Sleep(100 * time.Millisecond) // Simulate work
                }
                close(ch) // Close the channel when done
            }()

            // Consumer
            go func() {
                for num := range ch {
                    fmt.Println("Consumed:", num)
                    time.Sleep(300 * time.Millisecond) // Simulate work
                }
            }()

            // Wait for some time to allow goroutines to finish
            time.Sleep(5 * time.Second)
        }

How do I implement backpressure with channels in Go?

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How do I implement backpressure with channels in Go?

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