With the help of this article I was able to get my bot some custom domain.
But one question remains in my mind.
Projects are limited to 4000 requests per hour, with a burst of 4000 requests (subsequent requests will return a 429 "Too Many Requests" response).
Will I hit this rate limit even if I access the new domain setup through fly ??
i.e. if I use the new domain and not the one setup by glitch, will I hit the limit ?