I think there are many use cases. Fraud detection, risk analysis in finance, weather simulations, etc. These don't need to spill out to disk and are a perfect u

I think there are many use cases. Fraud detection, risk analysis in finance, weather simulations, etc. These don't need to spill out to disk and are a perfect use case for these systems. A friend of mine works for a company that does high speed weather analysis to make predictions for energy brokers, to predict prices of wind / solar energy on the market. They use these kind of systems extensively, because of the speed and volatility of the data. Fascinating stuff.