* 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:
Doc Morrow doesn't remember what happened to him last night--and what he doesn't know might kill him! With the clock ticking, Morrow consults with some very unorthodox specialists. But will the cure prove worse than the disease? "Charmingly demented... I can't wait for future volumes." --Cory Doctorow, Boing Boing