The details depend heavily on what specific database you’re working with, but in broad strokes, you’ll want to know: indices, query plans, when and where to cac

The details depend heavily on what specific database you’re working with, but in broad strokes, you’ll want to know: indices, query plans, when and where to cache expensive computations, every f—- word of your DB manual’s chapter on concurrency control, and the fastest method(s) for yeeting data in and out from your language/toolkit of choice.