I'm the primary author (formerly Which Linden). Surprised to see this pop up here after all this time! We wrote this almost three years ago, and at the time Z

I'm the primary author (formerly Which Linden). Surprised to see this pop up here after all this time! We wrote this almost three years ago, and at the time ZeroMQ was substantially less mature than it is now. In particular, the Python bindings were broken, weren't maintained by the ZeroMQ organization, and there was no indication they'd be production-ready by the time we needed it (which would have been within the next month or two). More importantly, we were looking for something that handled our use case a little bit more fully. Our message-rate requirements were laughably small, so what we really wanted was software that gave us an "inbox" for each of millions of users. We also weren't looking forward to implementing failover, consistency, and sharding from scratch. Edit: corrected timeline.