The impacts of coding style, efficiency, differences in data, potential abuse by users, and a host of other factors combine to make each web service unique. You will therefore need to consider these things carefully in the light of your unique knowledge of your system and the pointers and guidelines suggested here. In this chapter we have tried to show how a defensive and efficient coding style will make sure that your processes are reasonably small and also unlikely to grow excessively. Knowing that your processes are well behaved will give you the confidence to make the best use of the available RAM, so that you can run the maximum number of processes while ensuring that the server will be unlikely to swap.