Scaling relational databases to the point of 10s of millions of requests is extremely non-trivial.
Simply not true. That level of database activity is bread-and-butter for many people these days. Hundreds of millions, non-trivial in the sense that it will cost you a pile of money, but these days, basically straightforward, especially if you've done it before. Thousands of millions, now that's where things get interesting.
Oh, and he's talking about requests. The trading systems I've worked on can and do handle hundreds of millions of commits per day.
Simply not true. That level of database activity is bread-and-butter for many people these days. Hundreds of millions, non-trivial in the sense that it will cost you a pile of money, but these days, basically straightforward, especially if you've done it before. Thousands of millions, now that's where things get interesting.
Oh, and he's talking about requests. The trading systems I've worked on can and do handle hundreds of millions of commits per day.