Stack Overflow handles 8-10 billions hits a month on 9 web servers, but can do so on just 2. This works because we treat performance as a first class feature. In this session we’ll cover why it matters, the tangible benefits, the (open source and free) tools and approaches we use, and how you can use them in your own .NET applications. MiniProfiler allows us to see how long each page took to do each piece of work, quickly see overall performance, and spend much less time addressing any performance problems that occur.