Also you have to imagine the bulk of the traffic is going to be the same small bits of data (the homepage, top stories comment pages, etc). It’s not trivial to

Also you have to imagine the bulk of the traffic is going to be the same small bits of data (the homepage, top stories comment pages, etc). It’s not trivial to take advantage of that but that is also much easier to handle than QPS that are distributed across your dataset (IE Facebook or Twitter where everybody is seeing different things).