I know it's an alpha. I'm testing your alpha and just feeding back stuff.
I know that too
But it was easier to refer to it as a cache in the context of me telling you I have no solution - caching or otherwise - in place.
That's not what I meant, but I can see why you thought that.
I know it's for development only. I'm using it in that context, and there was a short period of time last night where I stopped to wonder why the add-on I'm working on suddenly started taking three times longer to load. Turns out, it wasn't my add-on at all and the delay is caused by the Dev Tools add-on and the delay is around 2-3 seconds on every single XenForo page.
Please don't take offence to what I'm saying - I've said loads of times the add-on is fantastic whether it be a 2ms delay or a 10 second delay on each page load. It works and I like it.
I'm just telling you my current experience. It may well be that the problem is my end, but at least if someone else says the same thing you will have something to go on.
Also the problem only happens when your add-on is the only one enabled still a 2 - 3 second increase on page load times (according to the debug mode output in the footer).
I'm on a different PC today. I will install the dev tools here and report back.
EDIT: For anyone considering trying this: PLEASE DO. It is actually a stroke of genius.