We are currently not using nodejs streams. The nodejs components are the event dispatchers placing the events in a queue, they do not include much even processing. Most of the event processing is done in Apache Storm. We have also contributed the Storm-Nodejs integration, but the nodejs Storm components are not using streams either. I have tried using streams to compress the information between the Java parent process in Storm, and the nodejs child process, but compression wasn't a good tradeoff, so even that little bit didn't get into production.