>But it won't, not even close, not when you are reading from the same hard drive/SSD card. I think you missed the part where OP said, "In general, you should

>But it won't, not even close, not when you are reading from the same hard drive/SSD card. I think you missed the part where OP said, "In general, you should aim to have a cache hit ratio of 99% or higher" You sound like you have PTSD from under powered hardware and a badly configured database.