Install Scalr server software stack.
The Scalr cookbook includes a BIND recipe for installing a local DNS. Use BIND as a hidden master to public DNS cache servers.
With Scalr, your website and web application can grow to millions of users with little work. Scalr will provision new servers on-the-fly to handle spikes in demand, and decommission them when no longer needed to lower cost. It will scale your database, application servers, and load balancers so you never have to.
Website www.scalr.net
Google Code Project scalr.googlecode.com