* Client-Side Metrics Include
* Wiki: https://tiny.amazon.com/cpso0wg6
* Needs to be included at the top of pages because it tracks latency--
* ue_t0 needs to be as close to body load as possible.
* - ue.tag maps to URLType dimension of OnlineQueryLog in PMET. Because we cannot add
* custome data to other dimensions in PMET through CSM, we are replicating it thrice to
* cover each store, page type, and the intersections of the two.
* - Whitelists are listed in the usage guide:
What happens to a young boy who's ignored by everyone? Who will deliver the crew of a lonely space shuttle from the threat of space pirates? What terrors await a pair of newlyweds when they step into a road side bar to ask for directions? Find out the answers in Part Four of Eleventh Hour: Vol 1, the Eagle Award nominated anthology that likes to take a walk on the weird side of life.