NSQ - A realtime distributed messaging platform in Go

NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. It scales horizontally, without any centralized brokers. Built-in discovery simplifies the addition of nodes to the cluster.

• support distributed topologies with no SPOF
• horizontally scalable (no brokers, seamlessly add more nodes to the cluster)
• low-latency push based message delivery
• combination load-balanced and multicast style message routing
• excel at both streaming (high-throughput) and job oriented (low-throughput) workloads
• primarily in-memory (beyond a high-water mark messages are transparently kept on disk)
• runtime discovery service for consumers to find producers
• transport layer security (TLS)
• data format agnostic
• few dependencies (easy to deploy) and a sane, bounded, default configuration
• simple TCP protocol supporting client libraries in any language
• HTTP interface for stats, admin actions, and producers (no client library needed to publish)
• integrates with statsd for realtime instrumentation
• robust cluster administration interface