Comcast has been building out its private cloud to host its next-generation Cloud TV platform (http://techcrunch.com/2012/05/21/comcast-x1/), and as part of that effort the Comcast Silicon Valley Innovation Center has developed and in the process of open sourcing a compatible version of Amazon's Simple Notification Service (SNS) and Simple Queue Service (SQS) that we plan to contribute to or integrate with OpenStack. We've built these services on top of Redis (http://redis.io/) and Cassandra (http://cassandra.apache.org/) for multi-data-center availability and extreme scalability and very low latency.
I'd like to present the work we've done to date and get feedback from the OpenStack community. By the time of this conference our code will be open sourced on GitHub and available to the community.