Comment All I can say is (Score 2) 45
I wish I had known about this book three years ago. Built that system, went through four releases, and moved on. God bless whoever has to maintain it now. But my biggest performance issues were from underdocumented 3rd party vendor APIs - black box JARs that did whatever the hell they wanted to, and a bunch of headscratching from the vendor when the damn things locked up.