How Pinterest Use MySQL to Build Large-Scale System

I really don't enjoy using MySQL. Compared to almost anything else, it's like stepping back in time. But I'll be damned if it doesn't work. We use a single MySQL instance to do a couple hundred million writes each day, and we've only rarely had any issues at all with our setup. Of course, we're not using the default setup, but the point is that it works and it works well.