* 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:
“RUNNING SCARED” prelude! Barry Allen is at a crossroads. He’s lied to the woman he loves about his life as The Flash, and a rift is growing between him and his heroic young partner. Now, his greatest enemy has threatened to strike down everyone close to him! It’s time to make a tough choice that will launch The Flash into his most incredible mission yet: a siege on the 25th century stronghold of Eobard Thawne!