Redis has native pubsub for a few weeks. A client can subscribe to channels by name or pattern, and publishers can publish messages to channels. The ruby, pyth

Redis has native pubsub for a few weeks. A client can subscribe to channels by name or pattern, and publishers can publish messages to channels. The ruby, python, and node.js clients support non-BLPOP pubsub. We are starting to see some layers added atop this (e.g. NodeRed).