Milline on erinevus gorutina ja süsteemilõime vahel ülesannete täitmise kontekstis?

A goroutine is a lightweight execution unit managed by the Go (runtime) environment, which uses very little memory and can be launched in large numbers simultaneously. A system thread is a heavier scheduling unit of the operating system.

Main differences:

• Goroutines are much lighter in resources than system threads.
• The scheduling of goroutines occurs within the Go runtime, not by the OS.
• Thousands of goroutines can operate simultaneously, while the number of system threads is usually smaller due to creation and switching costs.

Example of creating a goroutine:

func task() {
    fmt.Println("Executing task")
}

func main() {
    go task() // start goroutine
    time.Sleep(time.Second) // wait for the goroutine to complete
}

Thus, goroutines enable efficient execution of many tasks in parallel with lower overhead.