Batching is a common scenario developers come across to basically split a large amount of work into smaller chunks for optimal processing. Seems pretty simple, and it really is. Say we have a long list of items we want to process in some way. A pre-defined number of them can be processed concurrently. I can see two different ways to do it in Go.
The first way is by using plain old slices. This is something most developers have probably done at some point in their careers. Let's take this simple example: