scalr – eine Art redundantes, sich selbst heilendes und sich selbst skalierendes Hosting auf EC2 Basis.
It allows you to create server farms through a web-based interface using prebuilt AMI’s for load balancers, app servers, databases, and a generic AMI to build on top of.
The health of the farm is continuously monitored and maintained. When the Load Average on a type of node goes above a configurable threshold a new node is inserted into the farm to spread the load and the cluster is reconfigured. When a node crashes a new machine of that type is inserted into the farm to replace it.