user80805 questions

• HTTP headers: Last-Modified - how can it mimimize server load?
• gem server: How to update gems with missing rdoc?
• Should I go with Varnish instead of nginx?
• Should I consider Erlang for web mvc? [closed]
• MySQL primary key column type for large tables
• Jeweler adds circular dependency to my gem
• Node.js - cannot find module
• Node.js server restart drops the sessions
• ack-grep: chars escaping
• What is the convention for ordering the controller actions in Rails?

user80805 answers