> I take it back, my livedata_fetch.php is coming back with a 200 > status, but I want it coming back with a 304 not modified, right? > That means it'll only fetch the file if it's been updated since the > last time it was fetched?
Right. The server needs to set the Last-Modified header for this to work correctly. If it does, jQuery will use that date/time in the If- Modified-Since header. If the resource has not been modified then the server should return an empty response body with a 304 status.
