How do I measure durations and timeouts in Go?

In Go, measuring durations and implementing timeouts can be efficiently done using the time package. The package provides various tools to work with time, including the ability to set timeouts for operations and measure the duration of code execution.

package main

import (
    "fmt"
    "time"
)

func main() {
    // Measuring duration
    start := time.Now()
    
    // Simulating a long operation
    time.Sleep(2 * time.Second)
    
    duration := time.Since(start)
    fmt.Printf("Operation took %s\n", duration)

    // Implementing a timeout
    timeout := time.After(1 * time.Second)
    done := make(chan bool)

    go func() {
        // Simulating a long operation
        time.Sleep(2 * time.Second)
        done <- true
    }()

    select {
    case <-done:
        fmt.Println("Operation completed")
    case <-timeout:
        fmt.Println("Operation timed out")
    }
}