Hands-On Dependency Injection in Go

Stopping short

Stopping short is the process of discontinuing the processing request (before it would otherwise finish) based on an external signal.

In our case, that external signal will be the cancelation of the user's HTTP request. In Go, the http.Request object includes a Context() method; the following is an extract of the documentation for that method:

For incoming server requests, the context is canceled when the client's connection closes, the request is canceled (with HTTP/2), or when the ServeHTTP method returns

What does it mean when the request is canceled? Most importantly for us, it means that no one is waiting for the response.

If the user has given up listening to the response, it is likely they will consider the request failed ...