- From your description you seem to be pushing the “late” value via a Phoenix channel.
- Meanwhile you are potentially delaying the response inside the controller for up to 2.5 seconds for the result to possibly show up.
2.5 seconds is valuable time wasted in terms of UX - i.e. minimizing time to first meaningful paint.
Given that (1.) is already in place, wouldn’t it make more sense to immediately render the page with the “pending” placeholder from the controller and update it in the browser it as soon as the value is pushed via the Phoenix channel?
