Its more about what you are preparing for. Generally people prepare well on the technical details (algorithms, programming etc..) and solve the problems that a

Its more about what you are preparing for. Generally people prepare well on the technical details (algorithms, programming etc..) and solve the problems that are put forward by the interviewer. Here, you prepare well on the real problems faced by the company (say scaling beyond a million user) and then outline the solutions that you have for that.