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FastPubSub
Global low-latency pub/sub infra for real-time apps
FastPubSub helps real-time apps deliver messages faster and more consistently across regions. Instead of relying on default Internet routing, it continuously measures path quality between relays and routes traffic around congestion and suboptimal paths. The result is a lightweight global pub/sub layer for live events, fan-out delivery, multiplayer games, and other latency-sensitive workloads. You can also try a few simple live demos to see FastPubSub in action: https://demo.fastpubsub.com/
Hi Product Hunt 👋
I’m building FastPubSub for teams that need real-time delivery across regions, especially in apps where communication is not just client-to-server, but also user-to-user, device-to-device, or many-to-many across distributed locations. That includes multiplayer games, collaborative apps, live dashboards, signaling, event fan-out, and other latency-sensitive systems.
The core idea is simple: the default Internet path is not always the fastest or most reliable one. FastPubSub continuously measures path quality between relays and routes messages through better paths, helping avoid congestion, poor peering, and suboptimal routing.
What makes it different is that it doesn’t just expose a pub/sub API and rely on standard Internet routing. It uses a global relay mesh to find faster and more consistent paths in real time.
For developers, the benefit is straightforward: lower and more predictable latency across regions, better delivery consistency for live events, and no need to build their own global relay or routing layer from scratch.
Clients connect via WebSockets, relays communicate over QUIC, and the system is built for fire-and-forget delivery rather than persistence or replay.
I’d love your feedback on the positioning, use cases, and developer experience.
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About FastPubSub on Product Hunt
“Global low-latency pub/sub infra for real-time apps”
FastPubSub was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #69 on the daily leaderboard. FastPubSub helps real-time apps deliver messages faster and more consistently across regions. Instead of relying on default Internet routing, it continuously measures path quality between relays and routes traffic around congestion and suboptimal paths. The result is a lightweight global pub/sub layer for live events, fan-out delivery, multiplayer games, and other latency-sensitive workloads. You can also try a few simple live demos to see FastPubSub in action: https://demo.fastpubsub.com/
FastPubSub was featured in API (98.7k followers), Software Engineering (43.1k followers) and Developer Tools (519.8k followers) on Product Hunt. Together, these topics include over 104k products, making this a competitive space to launch in.
Who hunted FastPubSub?
FastPubSub was hunted by Konstantin Gerasimenko. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Konstantin Gerasimenko