I keep reading about ping/pong messages in websockets to keep the connection alive, but I'm not sure what they are. Is it a distinct frame type? (I don't see any methods on a javascript WebSocket o...

I see this new NGINX+ZeroMQ project on github and am now confused. What are the feature and scalability differences between Mongrel2 and NGINX+ZeroMQ. (The reason why I ask is because I'm under t...

I'm confused what purpose Mongrel2 serves/provides that nginx doesn't already do. (Yes, I've read the manual but I must to be too much of a noob to understand how it's fundamentally different than...

This is an attempt to discover a canonical answer for something that seems to be hard to Google for right now. I am writing a web app in Pyramid, and I have the luxury of deciding what my server st...