Concurrent Processing in Go

Go is multithreaded by design! I was recently asked to add concurrent processing to a Go project. I used sync package which adds concurrency primitives support to the codebase.

Every Go program is executed by a "goroutine". Each goroutine can spawn more goroutines using the `go` keyword. Goroutines are multiplexed through a thread pool and cooperatively scheduled.

Here is a sample Go concurrent processing script:

                          package main
                          import (
                            "fmt"
                            "sync"
                          )
                          func main() {
                            slice := []string{"a", "b", "c", "d", "e"}
                            sliceLength := len(slice)
                            var wg sync.WaitGroup
                            wg.Add(sliceLength)
                            fmt.Println("Running for loop…")
                            
                            for i := 0; i < sliceLength; i++ {
                                go func(i int) {
                                    defer wg.Done()
                                    val := slice[i]
                                    fmt.Printf("i: %v, val: %v\n", i, val)
                                }(i)
                            }
                            wg.Wait()
                            fmt.Println("Finished for loop")
                          }