6 ms·
Tho the difference between disk and RAM is collapsing. It used to be (90s) bog standard advice to never write to disk in the call path of a customer request. N
by lanstin 4y ago
Tho the difference between disk and RAM is collapsing. It used to be (90s) bog standard advice to never write to disk in the call path of a customer request. Now, there’s hardly anything that isn’t writing to disk all the time; but not spinning platters, just SSD.
So maybe their confusion is less bad than it seems at first? Maybe?
- layer8 4y agoWhile the numbers are changing, there are still 2-3 orders of magnitude between RAM and SSD latency: https://colin-scott.github.io/personal_website/research/interactive_latency.html https://colin-scott.github.io/personal_website/research/inte...
- lanstin 4y agoAnd a similar gap between cache and RAM, but a software engineer unclear about the finicky business of cache optimization would not seem as dumb as the person in the original post.