What was the most interesting task you enjoyed working on?

The most interesting task for me was developing a high-performance service in Go that handled a large number of parallel requests with minimal latency. It was especially engaging to optimize goroutines and channels for efficient concurrency management, as well as integrating the service with external APIs.

Here's an example of simple parallel code in Go:

package main

import (
	"fmt"
	"sync"
)

func worker(id int, wg *sync.WaitGroup) {
	defer wg.Done()
	fmt.Printf("Worker %d started\n", id)
	// simulate work
}

func main() {
	var wg sync.WaitGroup
	for i := 1; i <= 5; i++ {
		wg.Add(1)
		go worker(i, &wg)
	}
	wg.Wait()
	fmt.Println("All workers done")
}