what is event driven web server

Question

I want to understand basics of Event Driven web server, I know one of them is Tornado, but any other information is much appreciated.

Thanks

Answer 1

Event-driven manner aims at resolving the C10K Problem. It turns the traditional 'push model' into a 'pull model' to create a non-blocking evented I/O. Simply put, the event-driven architecture avoid spawning additional threads and thread context switching overheads, and usually ends up with better performance and less resource consumption.

Some overview from a rails developer, also includes analogy: http://odysseyonrails.com/articles/8