[lrvick]

I was really hoping someone would ask this. Now I get an excuse to share my neat flowchart! http://dumpon.us/media/uploads/tawlk_8.png

The only thing not really detailed here is that the whole stack runs on a set of redundant servers with Round Robin DNS at the helm to randomly distribute between them.

Also "caching proxy" should really just be called "routing proxy" as that is all that we are using it for. If websockets go to Tawlk app, if else go direct to nginx static serve.