* 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:
"Chapter 8 of 8. It's the end of the school year in 1998. Mark McGwire is racing Sammy Sosa to break the home run record, Bill Clinton is being questioned about a White House intern named Monica Lewinsky, Semisonic's Closing Time is on top of the charts, and Carl Carter is leading the Elizabeth Monarchs of rural Vermont to the state championship in his senior year. A full scholarship to the University of Maine is waiting for him, and everyone says he has a shot at the pros. He's so good he can do whatever he wants.
Until he makes one very arrogant mistake."