* 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:
Martin Foley, a cynical NYPD cop, investigates a murder in East Harlem. When he arrives, he finds no shooter, no victim. There are blood stains on the floor and thirty witnesses, who all agree on what happened: The killer shot the victim six times in the chest, then ran. A stranger stepped out the crowd, put his hands on the dead man's face. Like Lazarus, the dead man came back to life. The witnesses are convinced the stranger is an Angel of God.