You are right that using RAM is preferable to using disk; however, nobody is talking about disks here.
Using a lot of RAM is bad because it makes you slow: pretty much everything, from paging to hash table lookups, works faster the lesser data there is to process.
Minimizing RAM usage is a very worthwhile goal if you want to be faster.
You are right that using RAM is preferable to using disk; however, nobody is talking about disks here.
Using a lot of RAM is bad because it makes you slow: pretty much everything, from paging to hash table lookups, works faster the lesser data there is to process.
Minimizing RAM usage is a very worthwhile goal if you want to be faster.