"Database performance is the single most critical factor in our ability to scale while meeting service level objectives." Ah, that's unfortunate. It's hard to

"Database performance is the single most critical factor in our ability to scale while meeting service level objectives." Ah, that's unfortunate. It's hard to get RDBMS reliability/performance "right" in the face of changes, and scaling it isn't easy. But at least all the problems are well-known.