Thanks for this, probably enough to get started. The plan was to create a Rack-compatible injection point that uses ZMQ instead of HTTP which could be used wit

Thanks for this, probably enough to get started. The plan was to create a Rack-compatible injection point that uses ZMQ instead of HTTP which could be used with any of the standard Ruby frameworks, rather than getting too bare-bones. I'm not sure whether there are any real wins here though. Although my real use case is to take queries from Pushpin and put them directly into a persistent queue for processing by workers before them pushing the responses directly back at Pushpin so that we can do a zero-downtime deploy, even if the workers are down for up to 55 seconds (with long-polling).