Building My First Real API in Go — with Gin In part 4 I worked through Go's error handling model and came around on if err != nil . This is the post where everything from the last four parts — structs, interfaces, goroutines, error wrapping — stops being theoretical and actually gets wired into something that runs, accepts requests, and talks to a database. I'm building a small Orders API: create an order, fetch one by ID, list all of them. Simple enough that the routing and middleware...