Go Goroutines

What is a Goroutine?

A goroutine is a lightweight thread managed by Go.

It allows functions to run concurrently (at the same time).

Running a Goroutine

You can run a function as a goroutine by adding the go keyword before calling it.

This starts the function in a new concurrent thread.

Main Function Issue

The main function may finish before goroutines complete.

This can cause your program to exit before goroutines run.

Multiple Goroutines

You can run multiple goroutines at the same time.

They will execute independently and may complete in any order.

Anonymous Goroutines

You can run anonymous functions as goroutines.

This is useful for quick concurrent tasks.

Why Use Goroutines?

Goroutines are extremely efficient and lightweight compared to traditional threads.

• Run tasks concurrently
• Improve performance
• Handle multiple operations at once

Common Mistakes

Be careful with these:

• Program exiting before goroutines finish
• Assuming execution order
• Not using synchronization (covered later with channels)

Real-World Example

Goroutines are often used to handle multiple tasks like API calls or background jobs.

Practice

Create two functions that print messages and run them concurrently using goroutines.

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