Overview
Managed pub/sub. You throw a small binary blob at a tenant and a channel. Whoever is subscribed right now gets it. Usually from a nearby edge.
No history. Missed a message? It is gone. Public internet path dies? The overlay hunts another measured route. The live stream can keep going.
Sidebar:
- About the product — what it is, use cases, how delivery works
- Getting started — quickstart, public demos, client configuration
- Security & Auth — master tokens, access tokens, permissions
- Channels — naming, patterns, namespaces
- SDKs — JavaScript, Rust, WebTransport, filters
- API — WebSocket framing notes and REST token API
- Operations — observability, limits
- Troubleshooting — common failures
Official clients:
- JavaScript / TypeScript:
@fastpubsub-sdk/clienton npm - Rust:
fastpubsub-sdkon crates.io
C# and Java wrappers sit in the repo. They are not published packages.
No account for demo.fastpubsub.com:
- Paint Board — scribble together, live WebSocket RTT
- Online Radio — one encoder, many listeners, Opus plus track title
- Video Meeting — WebCodecs rooms (not WebRTC)
How to read them as examples: Try the demos.