Hi all,
I have an intermittent bug in production which I am trying to track down which causes requests to take a really long time:
Heroku times out all requests after 30 seconds, meaning the response never get’s sent for these slow requests and I never get alerted of the error.
Ideally I would force my own 30 second timeout to kill the request early. I’ve looked into cowboy’s idle_timeout option but it seems to have strange behaviour, not returning an error message to the user but rather a chrome error page and the client automatically attempts a refresh.
I am thinking of setting up a genserver that does a Process.send_after(__MODULE__, {:kill_if_open, request_pid}, 30_000)
and run Process.exit(pid, :kill) in the :kill_if_open handler.
Does anyone have any feedback on this approach? If it is bad practice, I could simply log/report that request and then investigate later.
