Section 8: Performance
Performance measurement and tuning could eat up an entire book by itself. Modern performance measurement involves statistical analysis, experimental design, and some simulation. It’s heavy stuff but usually you only need a few quick techniques to get started.
The recommendations in this section are not to be taken as rules you apply blindly. Computer geeks are notorious for hearing a rule and then processing it as “the truth” forever until the heat-death of the universe. I remember working with many Java programmers who would still convert all Strings to StringBuffers ...