I want to use Umbraco 7 as a platform for multi-tenants. I can see that the way to do this is basically create children for some root node and assign a different domain for each child. This is fine as a solution for me, however I am concerned about the performance of the whole system. I may need to create 100 000 sites there and I am afraid the (XML) cache and propbably the database will suffer from that. Is there anyone that has done anything similar? Do you want to share some tips? :-)