Picture this: you open your favorite streaming app on a Friday night, popcorn in hand, all set to binge that new series everyone’s talking about. You hit play—and nothing happens. The app just spins. After a few refresh attempts, you give up and head to Twitter to vent about it. That frustration you just imagined? That’s what happens when a system isn’t “highly available.” High availability (HA) might sound like a fancy buzzword, but at its core, it simply means: your…