Wait For It gives users a timely response even when the underlying WSGI application isn’t very timely. Wait For It does this by launching an extra thread for each incoming request. If the wrapped application responds in a timely manner (before time_limit) the response is simply passed on.
If the response doesn’t come back before the time limit, the user is given a response page that asks them to wait. The response page contains Javascript that will re-check the status of the page, and when the page is ready it will reload the page.