Cloud Orchestration and Microservices Monitoring
Reactive microservices monitoring would enable you to detect heavy load, and spin up new instances with the cloud orchestration platform of your choice (EC2,CloudStack, OpenStack, Rackspace, boto, etc.).
This allows you to write code that reacts to microservices metrics. QBit stats can be used to implement features like rate limiting, or spinning up new nodes when you detect things are getting overloaded. QBit can also feed stats into StatsD
Read more at Microservices Monitoring.