The shared-nothing model works great... if either you're just one developer or you've got a semi-competent Ops/DevOps setup. My first job out of college used PH

The shared-nothing model works great... if either you're just one developer or you've got a semi-competent Ops/DevOps setup. My first job out of college used PHP with one of the Rails-a-likes PHP has. During our user onboarding process, we'd poll the server to see if a data import finished, but since the requests shared _nothing_ and the Ops guy didn't understand PHP, it would load/run millions of lines of framework code for every single tiny polling request. On launch our site crashed because two people used it at the same time. Bananas. There's a way to make Apache fork after some code has already been run, but boy howdy if you don't do that and love those mega-frameworks.