How to Use Reactive Streams Patterns in Go

Go does not have a built-in Reactive Streams library, but you can implement reactive patterns using channels and goroutines to handle backpressure and asynchronous data flow. Use a buffered channel to limit concurrency and prevent the producer from overwhelming the consumer.

func processStream(input <-chan int) {
    output := make(chan int, 10)
    go func() {
        for v := range input {
            output <- v * 2
        }
        close(output)
    }()
    for v := range output {
        fmt.Println(v)
    }
}

Reactive streams are a way to handle data that arrives continuously without crashing your program. In Go, you achieve this by using channels to pass data between different parts of your code and goroutines to run them at the same time. Think of it like a factory assembly line where a buffer (channel) prevents workers from getting overwhelmed if the conveyor belt moves too fast.