This all boils down to using the right tool for the right task and knowing how to organize your code so you don't run in to limits in the platform components th

This all boils down to using the right tool for the right task and knowing how to organize your code so you don't run in to limits in the platform components that you use. In this case, the obvious solutions are to either use 'buffers' (think of them as extended memory from the old days) or to use multiple instances on the same machine or spread over several machines. If you write your code in such a way that you end up handling all your users in a single process then you will sooner or later run in to some limitation.