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The key isn't to reduce the number of database calls. It's to reduce the overall impact of those calls. Let's say that it takes 5 seconds to calculate one of these things, of which 4 seconds is finding and retrieving data. Now, let's say you could rewrite how you retrieve the data to take 3 seconds to retrieve and only .5 seconds to work with. So, 5 seconds drops to 3.5 seconds. Now, let's say that you could do 10 of these in the same 3.5 seconds.

This isn't just idle speculation. Over the years, I've done 99% and even 99.99% improvements in DB-bound programs. A lot of it has to do with how you store the data. Just because you collect it in one form doesn't mean you search it in that form.

My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to Re^3: A profiling surprise ... by dragonchild
in thread A profiling surprise ... by chexmix

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