Boost your Golang program by running multiple tasks at the same time.

A sequential program only runs one task at a time. A concurrent program can run multiple tasks at the same time and thus speed up the program significantly.

In Golang, concurrency is achieved by using Goroutines.

Goroutines simply let you convert a sequential program to a concurrent program without having to worry about threading, etc.

What Are Goroutines?

In Golang, Goroutines are used to achieve concurrency in a program. They are lightweight threads managed by the Go runtime.

Goroutines make it possible to create concurrent programs that can execute some particular tasks faster than a regular sequential program would.

The cost of creating a Goroutine is very small, so it is typical for a Go application to have thousands of Goroutines running concurrently.

To get the most out of them, let’s see an example.

How To Create a Goroutine

Let’s start by creating a very simple program that does not utilize concurrency and then turn it into a concurrent program.

In this example, you create a count function that simply counts numbers up to a value. But let’s also imagine this process eats up a lot of resources, and each number takes one second to compute. This can be simulated by using the time module with the Sleep function.

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