Avoiding common performance pitfalls

There are performance pitfalls in Golang – you’d think that with all its built-in concurrency magic, we could just sprinkle some goroutines here and there and watch our programs fly. Unfortunately, the reality isn’t that generous, and treating Go like a performance panacea is like expecting a spoonful of sugar to fix a flat tire. It’s sweet, but oh boy – it’s not going to help when your code base starts to resemble a rush-hour traffic jam.

Let’s dive into an example that illustrates a common misstep – excessive creation of goroutines for tasks that aren’t CPU-bound:

package main
import (
    "net/http"
    "time"
)
func main() {
    for i := 0; i < 1000; i++ {
        go func() {
            _, err...