Andrew gave a recent talk about it here https://www.youtube.com/watch?v=d9BAUBEyFgM https://www.youtube.com/watch?v=d9BAUBEyFgM middleware is a part of it, the

Andrew gave a recent talk about it here https://www.youtube.com/watch?v=d9BAUBEyFgM https://www.youtube.com/watch?v=d9BAUBEyFgM middleware is a part of it, then there's the ORM, caching and anything else that does IO.