4 ms·Turns out that cache invalidation and naming things are still the hardest problems in computer engineering.by stravant 4y agoTurns out that cache invalidation and naming things are still the hardest problems in computer engineering.nolok 4y ago... and then someone tries to do a quick fix with regextacone 4y agoAgreed, the hardest problems are indeed cache invalidation and cache invalidation.