What are the advantages of goroutines compared to operating system threads?

Goroutines are managed by the Go runtime, not the OS scheduler. This provides several advantages:

• Lightweight. A goroutine uses significantly less memory for its stack (a few KB) compared to an OS thread (a few MB). Thousands or millions of goroutines can run concurrently on a small number of OS threads.

• Fast creation and destruction. Creating and destroying goroutines is much faster because it does not require calls to the OS kernel.

• Cooperative multitasking (to some extent). Although the Go scheduler is preemptive, context switching between goroutines is faster because it occurs in user space.

• Scalability. Easily create a large number of goroutines to handle many concurrent tasks.

• Simpler interaction. Using channels for data exchange between goroutines is a safer and idiomatic way of concurrent programming compared to low-level OS thread synchronization primitives.

// Example of creating a goroutine
go func() {
    // Code executed in a separate goroutine
}()