posted 14 years ago
When the users start battering down the doors screaming that the app's too freaking slow or the servers catch fire because they're consuming resources like it's 2012, then you get out the performance tools, measure where the problems are, and address them. Premature optimization not only wastes resources, it makes the application harder to maintain. And more often than not, based on 20+ years of doing this for a living, the optimizations will be in the wrong place, so you'll end up having to measure and tune anyway. So might as well keep the app maintainable,
Often the most important part of the news is what they didn't tell.