I think the author had some good points about when to use caching - it's unlikely for the vast majority of readers on this forum who would need a speed up benef

I think the author had some good points about when to use caching - it's unlikely for the vast majority of readers on this forum who would need a speed up benefit from 10ms to 5ms just because of caching, precisely because of the complexity cache management involves. There's that old joke: What are the two hardest things in computer science? Cache expiry, and naming things.