How many of your structs does your code access million times a second? For most programs, that number is firmly 0. While you are optimizing your struct layout

How many of your structs does your code access million times a second? For most programs, that number is firmly 0. While you are optimizing your struct layout and decrease you app start time from 1.122765 seconds to 1.122764 seconds, I ship production code at 2x the rate because I only optimize for performance where it matters while otherwise optimizing for maintainability, testability, extensibility, dev fun and actually shipping.