It occurred to me the other day, that I should take a look at the middleware I use on this blog. I don’t know what it was. My spidey senses just tingled. Boy was I right. I totally had it backwards. Rack middleware is a fantastic thing. It’s like a little encapsulated rack application that you can use to filter, process, or otherwise mess with responses. There is middleware to add etags, configure caching, catch and log exceptions,...