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> just that our hardware never developed any tech where writes are as cheap as reads. Or even close. I wonder if that’s theoretically possible.

I had it in my head that modern flash actually does read in a way that involves writing, and we just paper over that for the sake of the abstractions we use. Am I wildly misremembering?




You might be thinking of DRAM, which does work that way. Reads discharge the memory array capacitance so the data has to be amplified and rewritten.


As far as I know, reads are reads. Though, writes aren't quite so simple

Sometimes blocks may have to be read and re-written elsewhere to make room... and this is what makes using TRIM and having cache on-disk so important.


Oh, I might have gotten it backwards; writes actually involving reads could make sense.




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