Samurais had something called bushidō, way of the warrior, code of conduct they had to follow. In similar manner you have to follow certain opt-dō if you want to optimize your application. I have tried to sketch such a path in my nodecamp.eu talk "Understanding V8" and +Daniel Clifford tried to do the same in "V8 Performance Tuning Tricks" talk on GDD11 in Berlin. But not everybody has seen those