Valentine’s Day was a nail-biter for Jody Mulkey, chief technology officer at Ticketmaster. Coming off high-profile Grammy performances Sunday night, both Chance the Rapper and thrash-metal band Metallica put tickets on sale for their upcoming tours. Metallica went at 6:00 a.m. ET and Chance at 4:00 p.m. As fans flooded onto Ticketmaster’s website, Mr. Mulkey […]