It’s going to be different for every page load. Basically they are search results, but not the regular WordPress search, it’s returning some results from 3rd party APIs and stuff that takes some fetching and crunching. They are all displayed in the same page, like, mysite.com/search-results/?searchparam=xxxxx.

I do cache it in my local database and in the first instance flat html files, but sometimes a wait is unavoidable because results need to be refreshd, so I want to show some kind of “searching” GIF – I think it’s a lot more friendly than a “Waiting for xxxx.com” to load the whole page, but the only way I can see to do that is have WordPress load at least the headers and whatnot, but load the_content aysnchronously.