How does the @Qualifier annotation affect the selection of a bean in dependency injection?

Goroutines in Go are lightweight threads managed by the Go runtime. Each goroutine has its own stack memory, initially small (about 2 KB) and can dynamically grow as needed.

Memory interaction occurs as follows:

• All goroutines share a common heap where dynamically allocated objects reside.
• Memory in the heap is managed by the garbage collector, which tracks references from all goroutines.
• To pass data between goroutines, channels are used, providing safe exchange without data races.
• Each goroutine's stack is isolated, allowing efficient context switching without significant overhead.

Example of launching two goroutines that exchange data via a channel:

func main() {
    ch := make(chan string)

    go func() {
        ch <- "hello from goroutine"
    }()

    msg := <-ch
    fmt.Println(msg)
}

Thus, goroutines share the heap memory but have separate stacks, ensuring efficient and safe parallel execution.