Sorry, not quite sure what you mean.  This logic wraps the view, and only sets the messages (which get returned by the uncached API request).  The handler called will be the version wrapped in the kalite_cache_page decorator, so it's still possible to get a 304.

If your question is a generic one, independent of what's going on here... sure, it's always possible to return a 304 at any point.  We literally just `return HttpResonse(status=304)` (or is it status_code? I always have to check).  But you know that, so .. still not sure what you're asking :-/