* 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:
In the city of Philadelphia there is a tall building at 18th and Market Street, atop of which lives four individuals. They are the official protectors of the city. Their job is to be around when traditional law enforcement fails. But are they really heroes? Meet Philadelphia's contracted super-hero team, Threshold. A quartet more interested in milk and cookies than crime and punishment. A team more concerned with battling indigestion than their arch enemies. Sure, they have super-powers. They can leap tall buildings, fly, and do all the stuff other heroes do. More than human? Probably. Less than heroes? Without a doubt.