Real-time messaging over measured low-latency paths
FastPubSub is not a queue or a durable log. It is a low-latency message delivery fabric for live events.
FastPubSub is a managed service broker you consume. Kafka, NATS, and RabbitMQ are software systems you typically deploy, configure, and operate yourself.
You need durable logs, replay, retention, and stream processing with historical data.
You need queue semantics for work distribution, acknowledgments, and brokered task processing.
You need lightweight broker messaging, request/reply patterns, and internal service transport.
You want ready-to-use messaging infrastructure, not broker software to deploy and operate. FastPubSub gives you a global overlay network built for minimal latency.
FastPubSub is a managed service you consume. You do not install clusters, storage, or regional deployments for messaging yourself — just connect via WebSocket and start publishing.
A planet-wide overlay mesh routes messages over measured low-latency paths and around BGP detours and congested interconnects, for live delivery that stays fast when direct Internet paths are not.
You consume FastPubSub as a managed broker. You do not run clusters, storage, or regional deployments for messaging yourself.
FastPubSub routes around BGP detours and congested interconnects over a QUIC overlay mesh when direct Internet paths are slow.
No durable log, no replay, no consumer groups. Just fast live transport for real-time messages.
Use durable brokers for storage and replay. Use FastPubSub for live transport over better paths.