For anyone new to building web applications with Go, it's important to realise that all incoming HTTP requests are served in their own Goroutine. This means that any code in or called by your application handlers will be running concurrently, and there is a risk of race conditions occurring. In case you're new to concurrent programming, I'll quickly explain the problem. Race conditions occur when two or more Goroutines try to use a piece of shared data at the same time, but the result of thei...
