I looked at it for a project, but the current release still seems very 'early'. It was hard to figure out how to do anything with the clients, other than the ba

I looked at it for a project, but the current release still seems very 'early'. It was hard to figure out how to do anything with the clients, other than the basic querying covered in the documentation. You have to do a bit of work to get it to run under windows. The indexing gateway mechanism is also difficult to figure out. I would personally rather use Apache Lucene on its own (which I believe SenseiDB itself uses). That said, it does show some promise and in future versions may become a useful technology.