Show HN: Real-time surveys via QR code, built with Cloudflare Durable Objects

Category: web-framework

Tags: real-time, cloudflare, serverless, edge-computing, surveys

Score: 6.0/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 5)

A real-time audience survey tool where presenters share a QR code for live responses and see results update instantly. It's interesting because it leverages Cloudflare Durable Objects to solve the hard problem of stateful, real-time fan-out at the edge, using a single-instance model to manage Server-Sent Events connections efficiently.

Target audience: backend devs, devops

Repository: https://rifts.to/blog/building-real-time-surveys-cloudflare-durable-objects

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