I want to know if its possible to register parts of the page to be processed for all visitors (or maybe there's a hook I can use?). We have a geoip software that gets the vistor's location and shows him events near him. I would like to cache the whole page except for that widget.
How would I go about achieving this?
I did a PHPDoc for w3-total cache and nothing jumps out as being something that registers "do not cache" parts of pages.
Would trying to hook into a wordpress cache hook be best? if so, any direction on how people have solved this problem in the past would be great.