Depending on what you're building, memory is still scarce. Of course in the past that was much more common, but even today just doubling memory doesn't always f

Depending on what you're building, memory is still scarce. Of course in the past that was much more common, but even today just doubling memory doesn't always fly: Embedded is still not a land of plenty; and not every computational expensive task is a money earner, which might put you in a difficult spot when arguing with controlling about a bigger server or at least a memory upgrade. Also: Caching.