In the entire architecture of a website, there is a very important design element: the website framework. This framework directly determines the maximum number of users the site can support. Each site's program design has differing capacities, categorized as ten-thousand level users, one-hundred-thousand level users, five-hundred-thousand level users, one-million level users, ten-million level users, and one-hundred-million level users. Once the structure of the website reaches its maximum user capacity, it must be restructured in other ways to adapt. Otherwise, users will naturally流失 (drift away), and they will no longer be able to use the website.