- Analyzing network traffic in real-time to identify possible attacks ?
- Environmental monitoring applications, which process raw data coming from sensor networks to identify critical situations ?
- Applications performing on-line analysis of stock prices to identify trends and forecast future values ?
http://home.deib.polimi.it/margara/papers/survey.pdf
http://nguyentantrieu.info/blog/the-real-time-event-processing-open-source-stack/
Others:
http://lambda-architecture.net
http://kafka.apache.org/
http://sploutsql.com/architecture.html
http://prestodb.io/