开源的,看起来还不错,从用的软件上看, 应该优化的也还行。
这是一个demo
http://try.discourse.org/这是代码
https://github.com/discourse/discourseDiscourse is a JavaScript application that runs in your web browser, using the Ember.js JavaScript framework.
The server side of Discourse is written in Ruby on Rails with a Postgres database, and Redis server cache. You can deploy Discourse on a virtualized cloud server (Amazon EC2, Rackspace, Azure) or on cloud hosting (Heroku, Engine Yard, Appfog, etc) wherever Ruby on Rails is supported. The minimum version requirements are:
Postgres 9.1
Redis 2.6
Ruby 1.9.3