Turbine is a tool for aggregating streams of Server-Sent Event (SSE) JSON data into a single stream. The targeted use case is metrics streams from instances in an SOA being aggregated for dashboards.

For example, Netflix uses Hystrix which has a realtime dashboard that uses Turbine to aggregate data from 100s or 1000s of machines.

Here is a snapshot of the dashboard being used to monitor several systems across the company.