Go Concurrency

The key component of the Go concurrency model is the goroutine, which is the minimum executable entity in Go. To create a new goroutine, we must use the go keyword followed by a function call or an anonymous function—the two methods are equivalent. For a goroutine or a function to terminate the entire Go application, it should call os.Exit() instead of return. However, most of the time, we exit a goroutine or a function using return because what we really want is to exit that specific goroutine or function and not stop the entire application.

Everything in Go is executed as a goroutine, either transparently or consciously. Each executable Go program has at least one goroutine, which is used for running the main() function of the main package. Each goroutine is executed on a single OS thread according to the instructions of the Go scheduler, which is responsible for the execution of goroutines—the developer has no control over the amount of memory allocated...