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Are ajax requests more resource-intensive than a normal page load?
For example, I have a simple menu with normal links (when you click on the link you get on a page).
With ajax, I can prevent this behaviour on click and request the link’s href with ajax (GET), then get the html I want from the results and insert it in the current page. Does this use more resources than the normal link behaviour?
I would use ajax requests only if you want to add enhanced value to the page, by changing the look/functionality after the user has interacted with the page.
It probably doesn’t necessarily use more resources than just clicking on the link, but it is definitely faster for the user because it doesn’t need to reload all the other content on the page as well.
Most of it has to do with the type of experience you are trying to deliver.
I would try both as an experiment and see which feels better to you!